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Mathematics
Charlie Benjamin
7 January, 17:31
Simplify x^2+2x-8/x^3-16x
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Adison Richards
7 January, 20:29
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X^2 + 2x - 8 = x^2 + 4x - 2x - 8 = x (x + 4) - 2 (x + 4) = (x + 4) (x - 2);
x^3 - 16x = x (x^2 - 4^2) = x (x + 4) (x - 4);
the fraction is reduced from (x + 4) (x - 2) / x (x + 4) (x - 4) to (x - 2) / x (x - 4)
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Luna Arias
7 January, 21:21
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X^2 + 2x - 8 = (x + 4) (x - 2)
x^3 - 16x = x (x^2 - 16) = x (x + 4) (x - 4)
Therefore: (x - 2) / x (x - 4)
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