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if -8 times -8 is 64 then why is -8 squared -64?

 Sep 4, 2015
 #1
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if -8 times -8 is 64 then why is -8 squared -64?,

BOTH OF THEM ARE EXACTLY THE SAME!.

-8 squared is NOT -64 but should be 64

Try it on your calculator.

 Sep 4, 2015
 #2
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This is a perennial question!

 

(-8)^2 = 64

-(8^2) = - 64

 

Since raising to a power is generally taken to be of higher priority than negation, the expression -8^2 is interpreted as -(8^2) by most pieces of technical software.  Hence -8^2 = -64.

 Sep 4, 2015

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