How do you simplify $x^3+(5x^2-6x-1)x+7x^2$ ?

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Answer 1 · 2018-06-18T10:21:19

$color(purple)(=> 6x^3 + x^2 - x$

#x^3 + (5x^2 - 6x - 1)x + 7x^2

$=> x^3 + 5x^3 - 6x^2 - x + 7x^2, "removing bracket"$

$=> x^3 + 5x^3 + 7x^2 - 6x^2 - x, " bringing like terms together"$

$color(purple)(=> 6x^3 + x^2 - x$

How do you simplify x^3+(5x^2-6x-1)x+7x^2 x^3+(5x^2-6x-1)x+7x^2?