Mathematics, 11.11.2020 21:10 xojade

Darlene wrote this proof of the identity (x + y) ^ 2 - (x - y) ^ 2 = 4xy . Which of the following is a justification for Step 5 of her proof?

Darlene wrote this proof of the identity (x + y) ^ 2 - (x - y) ^ 2 = 4xy . Which of the following i

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Darlene wrote this proof of the identity (x + y) ^ 2 - (x - y) ^ 2 = 4xy . Which of the following is...

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