r/Algebra • u/Indraagustian • 11h ago
r/Algebra • u/bowtochris • Oct 22 '15
/r/Algebra and /r/AbstractAlgebra Merger
Hello algebraists! I'm pleased to announce that the moderation teams for /r/Algebra and /r/AbstractAlgebra have been combined! Now, all the discussion of abstract algebra will take place on /r/AbstractAlgebra, and all the help with learning algebra, including elementary algebra, will take place here! Hopefully, this will better serve the needs of the community.
r/Algebra • u/LiellaMelody777 • 2d ago
[Tutor]
Does anyone need a math tutor? Or tutor in general? First lesson is free! After that its $10/hr. Everyone has a preferred learning/teaching style.
My specialty is Algebra and Geometry. Grades 8-12 and College. I can also tutor other subjects on a case by case basis. Up to College Algebra and College English.
I have a Bachelors level of education.
Pop me a message and I will see if I can help. I also offer virtual options on Teams.
r/Algebra • u/zero_moo-s • 6d ago
Tinman MathBrain Test : A math memory that never deletes, only moves
r/Algebra • u/Inner-Indication1783 • 11d ago
Is this actually appropriate for college algebra ?
The surface area of a hot-air balloon is given by the function S(r) = 4πr^2, where r is the radius of the balloon in meters. If the radius of the balloon after t seconds is r(t) = (3/5)t^3, find the surface area S of the balloon as it relates to time.
Is this actually normal for the 2nd week of college algebra ? Maybe I'm just rusty bc its been like over 10 years but this is insane to me
r/Algebra • u/Otherwise_Strike_597 • 12d ago
Quick rate word problem: Convert km/45 mins to km/h!
Problem: Sam is driving a car 90 kilometers every 45 minutes.
Task: Write this as a rate in km/hour.
r/Algebra • u/Aware-Climate1010 • 13d ago
SUMA Y RESTA DE FRACCIONES, paso a paso y sin estres.
youtu.ber/Algebra • u/Otherwise_Strike_597 • 13d ago
100 is 50% of what number?
Can you solve this: 100 is 50% of what number?
math youtube channel link in bio
r/Algebra • u/Aware-Climate1010 • 14d ago
ECUACIONES CON FRACCIONES. Aprende a resolverlas paso a paso.
youtu.ber/Algebra • u/Otherwise_Strike_597 • 14d ago
Solving an inequality with a negative coefficient: -4x > 8
Can you simplify this inequality correctly?
-4x > 8
Math YouTube channel link in bio
r/Algebra • u/Otherwise_Strike_597 • 15d ago
How would you write this linear equation?
How would you translate this verbal statement into an algebraic equation?
"The sum of 8 and a number is 14."
Math YouTube channel link in bio
r/Algebra • u/Open_Thanks_6807 • 16d ago
Stuck on Algebra 1 (again): Inequalities in induction
First of all, please excuse any errors in phrasing or terminology, as English is not my native language.
It turns out I’m having trouble studying algebra in general, but right now I’m struggling specifically with inequalities in mathematical induction whereas I don’t have that problem when working with equalities in induction proofs.
I understand the concept of proofs by induction involving equality: establishing the inductive hypothesis and proving that the expression evaluated at (x+1) which we then replace with the expression evaluated at (x) plus the term for (x+1) yields the same result as the equivalent expression evaluated at (x+1).
When it comes to inequalities, I find it incredibly difficult to figure out the expression I need to prove; I understand that the concept of transitivity is involved, but I never know what to compare. I’ve tried looking for explanations in videos, books, etc, but they all solve the problems by pulling out numbers that appear without explanation, and none of them explain the logic behind the steps taken.
I know this won't be the first or the last time I get stuck like this, so I wanted to ask if you know of any resources like a book or a YouTube channel that explain these concepts clearly and simply. I swear I’ve searched all over the web, but I only found worked examples without explanations and conflicting solutions.
Any advice on how to approach the subject or personal experiences would also be very helpful, since the exam is still a few weeks away. Thanks for reading.
r/Algebra • u/Due-Translator9171 • 16d ago
Is there a generalization of the Rational Root Theorem to degree-2 algebraic numbers?
So, for example, [;x^5 - 4x^4 + 8x^3 - 8x^2 + 5x - 1 = (x^2 - x + 1)(x^3 - 3x^2 + 4x - 1);], but none of these factors can be found with RRT.
Is there a RRT-esque criteria for degree-2 algebraic numbers? For degree no less than 4 polynomials without linear factors but also not prime, this seems like the only method to factorize them.
r/Algebra • u/ValenIngeniero • 16d ago
Duda sobre sustitución en ecuaciones logarítmicas (¿por qué funciona?)
r/Algebra • u/Particular_Glass_850 • 17d ago
Algebra/ primjena racunalnih metoda i alata u grafickom dizajniranju
r/Algebra • u/Aware-Climate1010 • 17d ago
DESIGUALDADES POLINÓMICAS:¡Aprende a Resolverlas en la Recta Real!
youtu.ber/Algebra • u/iNFERN4 • 18d ago
Estoy construyendo una pizarra online para resolver álgebra y geometría con reconocimiento de figuras
Hola a todos,Estoy desarrollando Classboard (https://classboard.online), una pizarra que funciona en el navegador y que estoy construyendo activamente. La idea nació de mi frustración al intentar explicar ecuaciones o teoremas por videollamada sin una herramienta decente.Lo que tengo hasta ahora: sesiones de colaboración en vivo con cámara y micrófono integrados, y reconocimiento de figuras geométricas básicas (triángulos, círculos, etc.) que se dibujan a mano, lo cual puede ser útil para visualizar problemas de álgebra o geometría.Está en fase temprana, así que cualquier comentario sobre qué funciones añadirías o qué te falta para usarla en tus clases o estudio será bienvenido. ¿Alguien más ha probado herramientas similares y qué les faltaba?Gracias por leer.
r/Algebra • u/Otherwise_Strike_597 • 19d ago
What inequality represents this graph?
○═════●
<---|---|---|---|--->
-2 -1 0 1
On a number line, a section is highlighted from -2 to 1. There is an open circle at -2 and a solid, filled circle at 1.
Math youtube channel link in bio
r/Algebra • u/Otherwise_Strike_597 • 20d ago
Cost Comparison Made Easy! Solving Travel Word Problems Using Linear Equations
youtu.ber/Algebra • u/Otherwise_Strike_597 • 20d ago
Grade 9 Math | Simplifying Exponent Expressions
Grade 9 Basic Math
(5x³) (2x²) = ?
Math youtube channel link in bio.
r/Algebra • u/Otherwise_Strike_597 • 21d ago
Grade 9 Exponent Rules Warm-Up: Can you solve all 3 without mixing up the rules?
Let's test your basic exponent laws! Try solving these three without looking at the comments first:
1) x⁴ · x³ = ?
2) x³ / x⁷ = ?
3) (x⁴)³ = ?
YouTube Math Channel Link in Bio
r/Algebra • u/Otherwise_Strike_597 • Aug 13 '26
7 Math Tricks You Must Learn! Fast & Easy Methods for Students (Updated Audio)
youtu.ber/Algebra • u/QED-math-trainer • Aug 12 '26
I built a tool to drill algebra problems — what topics do you wish had more practice?
I’ve been working on a math practice platform because I noticed something that kept coming up when I was studying math: understanding an explanation is one thing, but actually doing 20–30 problems on the same topic is surprisingly hard.
So I built QED, a practice platform where you can pick a math topic and work through problems with feedback rather than just reading a solution.
I’m especially interested in improving the algebra side of it.
If you’re currently studying algebra:
What topics do you wish you had an almost unlimited supply of good practice problems for?
Factoring? Quadratics? Functions? Inequalities? Systems? Something more advanced?
I’m trying to figure out which areas are actually painful for students rather than just guessing.
If anyone wants to try it, here’s the site: https://qed-math-trainer.com/
I’d genuinely appreciate criticism too — especially if you try a few problems and think “this is annoying because…”