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Find the product mentally.
[(x + 1)(x - 1)]2

Find the product mentally. [(x + 1)(x - 1)]2-example-1
User Sheshnath
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3 votes

Answer:

x²-1

Explanation:

Because the product is a difference of squares, all you have to do is do x*x=x² and add that to (+1)(-1)=-1, getting you x²-1, so that's how you could do it mentally.

User Andrew Lee
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