Is my Math Textbook wrong on this Integer Problem or is it just me?

**medlinemd** · April 11th 2012, 04:48 PM

Can you guys help me with this problem with a little explanation on how you came to solve it and I will share the answer that was provided in the book. Thanks in Advance

$Is my Math Textbook wrong on this Integer Problem or is it just me?-mathh.jpg$

**skeeter** · April 11th 2012, 05:41 PM

note ... $-2^2 = -1 \cdot 2^2 = -1 \cdot 4 = -4$ ,

and ... $(-2)^2 = (-1 \cdot 2)^2 = (-1)^2 \cdot 2^2 = 1 \cdot 4 = 4$

therefore ...

$-2^2 - (-2)^2 = -4 - 4 = -8$

**medlinemd** · April 12th 2012, 07:50 PM

$Is my Math Textbook wrong on this Integer Problem or is it just me?-math-answer.jpg$

You got the same answer as the book. I see where I went wrong thank you for answering my question. I thought -2^2 was the same as (-2)^2

How I did it the first time:
-2^2-(-2)^2=
=-2^2-4
=4-4
= 0

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