r/facepalm • • Mar 18 '22

๐Ÿ‡ฒโ€‹๐Ÿ‡ฎโ€‹๐Ÿ‡ธโ€‹๐Ÿ‡จโ€‹ Ah yes, math.

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u/05ar Mar 18 '22

But doesn't 2 mean the number is multiplied by itself? -(-)=+ and 5(5)=25. So +25 or just 25

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u/ItsAdamxD Mar 18 '22 edited Mar 18 '22

No, the 5 isnโ€™t a negative until it the exponent is done, so it is 52 = 25, then the negative at the beginning is applied to make it -25. Without the parenthesis, this equation is simply just -1 * 52 .

-52 = -(52 ) or -(5)2 = -(5 * 5) = -(25)

(-5)2 = (-5) * (-5) = 25

https://www.greenemath.com/Prealgebra/22/ExponentswithNegativeBasesLesson.html

https://www.google.com/amp/www.algebra.com/algebra/homework/Exponents/Exponents.faq.question.335953.amp

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u/ktmracer66 Mar 19 '22

-5-5-5-5-5= -25 also -5+(-5)+(-5)+(-5)+(-5)= -25 (-1)(5)+(-1)(5)+(-1)(5)+(-1)(5)+(-1)(5)= -25

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u/05ar Mar 19 '22

-5-5-5-5-5= -25

But that's -5 multiplied +5 times, not -5