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10. Selena says that (a - b)2 and (b-a)2 are equivalent expressions. Do you
agree or disagree? Justify your answer with work or a valid explanation.
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1 Answer

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I agree.

Step-by-step explanation:

(a - b)² compared to (b - a)²

Work with (b - a)².

(b - a)² =

Factor -1 out of b - a.

= [-1(-b + a)]²

Apply the exponent to the two factors of the multiplication.

= (-1)²(a - b)²

= 1(a - b)²

= (a - b)²

We just proved that (a - b)² = (b - a)².

Selena is correct.
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