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Factor: x ( x^2-81 ) = 0?
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Verified answer
Its the difference of two squares
x(x - 9)(x + 9) = 0
x = 0, 9, -9
x (x^2 - 81) = 0
(x^2 - 81) is (x - 9) (x + 9)
x (x - 9) (x + 9) = 0
The roots are 0, + 9 and -9
x(x+9)(x-9)