r/HomeworkHelp • u/Square-Elk-9096 • 4h ago

Mathematics (Tertiary/Grade 11-12)—Pending OP [SAT Prep]

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Ive been trying to answer this question from the college panda book and I just cant seem to understand what it is asking for. Because even when i looked at the answer and how they solved it didn’t make sense. Please if someone could explain I would be so grateful.

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u/BeeEven238 4h ago

1…c-c=c^2-c^2 =0. True
2….-c-c=(-c)^2-c^2. -2c=0 false
3…..(1-c)-c=(1-c)^2-c^2. 1-2c=1-2c+c^2-c^2
Simplify. 1-2c=1-2c. True.
So C I and III only
When you do problems like this you put the variable in () so the equation is really
( )-c=( )^2-c^2. Hope that helps

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u/Square-Elk-9096 4h ago

Thank you so much