How do you factor $x^3+7x^2+12x$ ?

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Answer 1 · 2018-04-13T09:55:11

$x(x+3)(x+4)$

$"take out a "color(blue)"common factor "x$

$=x(x^2+7x+12)$

$"the factors of + 12 which sum to + 7 are + 3 and + 4"$

$=x(x+3)(x+4)$

How do you factor x^3+7x^2+12xx^3+7x^2+12x?