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How do you factor $5x^3 - 40$ ?

1 Answer

Jul 18, 2017

$a^3-b^3=(a-b)(a^2+ab+b^2)$

Explanation:

$5x^3-40=5(x^3-8)=5(x^3-2^3)=5(x-2)(x^2+2x+4)$

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