How do you multiply $(x – 3)(x^2 + 7x – 8)$ ?

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Answer 1 · 2016-05-15T21:04:19

$x^3+4x^2-29x+24$

Given: $" "color(blue)((x-3))color(brown)((x^2+7x-8))$

This is the same as:

$color(brown)(color(blue)(x)color(brown)((x^2+7x-8))color(blue)(-3) color(brown)((x^2+7x-8)))$

$x^3+7x^2-8x-3x^2-21x+24$

$x^3+4x^2-29x+24$

How do you multiply (x – 3)(x^2 + 7x – 8) (x – 3)(x^2 + 7x – 8)?