Alg 2 is cancer

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250x^3-128y^3

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Guest Jul 6, 2016

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250x^3-128y^3

\(250x^3-128y^3\\ =2(125x^3-64y^3)\\ =2[(5x)^3-(4y)^3]\\~\\ \qquad \boxed{a^3 - b^3 = ( a-b )(a^2 + ab + b^2)}\\~\\ =2(5x-4y)(25x^2+20xy+16y^2) \)

Melody Jul 6, 2016

Melody · Answer 1 · 2016-07-06T03:27:58

250x^3-128y^3

\(250x^3-128y^3\\ =2(125x^3-64y^3)\\ =2[(5x)^3-(4y)^3]\\~\\ \qquad \boxed{a^3 - b^3 = ( a-b )(a^2 + ab + b^2)}\\~\\ =2(5x-4y)(25x^2+20xy+16y^2) \)