math

8x^3+125
(2x)^3+(5)^3
(2x+3)(5x^2-6x+25)
check this for me

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  1. Your third step is not correct.
    Use the fact that a^3 + b^3 = (a + b) (a^2 - ab + b^2).

    Then let a = 2x and b = 5.

    You get (2x + 5)(4x^2 -10x + 25)

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    posted by drwls

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