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Mathematics
Christopher Goodwin
11 June, 16:02
What is (x-5) (x+5) ?
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Ignacio Odom
11 June, 18:06
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Hey there, we are going to mutliply polynomials, (x-5) = (x+-5) and (x+5) = (x+5), (x) (x) + (x) (5) + (-5) (x) + (-5) (5) = x²+5x-5x-25=x²-25. Therefore, (x-5) (x+5) = x²-25
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