SOLUTION: explain why b2 = (-b)2 for any number b.

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Question 527657: explain why b2 = (-b)2 for any number b.
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
The RHS equals (-b)(-b) = (-1)(-1)(b)(b). Since -1 times -1 equals 1, the RHS is equal to b^2.