Question

PLZ SIMPLIFY
(x-7)(x^2 - 8x - 19)

Answer 1

Explanation:

(x-7)(x^2 - 8x - 19)

=(x+−7)(x^2+−8x+−19)

=(x)(x^2)+(x)(−8x)+(x)(−19)+(−7)(x^2)+(−7)(−8x)+(−7)(−19)

=x^3−8x^2−19x−7x^2+56x+133

=x^3−15x^2+37x+133

Answer 2

x^3 -15x^2 +37x +133

Explanation:

(x-7)(x^2 - 8x - 19)

Multiply x by all the terms in the second parenthesis

x * (x^2 - 8x - 19)

x^3 -8x^2 -19x

Multiply -7 by all the terms in the second parenthesis

-7 * (x^2 - 8x - 19)

-7x^2 +56x +133

Add the results together.

I like to line them up vertically

x^3 -8x^2 -19x

-7x^2 +56x +133

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x^3 -15x^2 +37x +133