What is the standard form of $y= (-2x-9)^3-(3x+2)^2$ ?

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Answer 1 · 2017-05-02T07:09:34

$y=-8x^3-117x^2-498x-733$

standard form: $Ax + By = C$

start by expanding each parenthesis:

$(-2x-9)^3 = -8x^3-108x^2-486x-729$

&

$(3x+2)^2=9x^2+12x+4$

subtract each set of equations:

$y=(-8x^3-108x^2-486x-729)-(9x^2+12x+4)$

$→ y=-8x^3-117x^2-498x-733$

What is the standard form of y= (-2x-9)^3-(3x+2)^2 y= (-2x-9)^3-(3x+2)^2?