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Choose the correct simplification of the expression

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(3x − 6)(2x^2 − 4x − 5).

asked Mar 16, 2013 in PRE-ALGEBRA by chrisgirl Apprentice

1 Answer

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(3x -6)(2x^2 -4x -5)

Recall : Distributive property

3x(2x^2)+3x(-4x) +3x(-5) +(-6)(2x^2)+-6(-4x) +-6(-5)

6x^3 - 12x^2 -15x -12x^2 +24x +30

Simplify

6x^3 -12x^2  -12x^2 + 24x - 15x +30

6x^3 - 24x^2 + 9x +30

The expression of (3x-6)(2x^2 - 4x - 5) : 6x^3 - 24x^2 + 9x +30.

answered Mar 16, 2013 by diane Scholar

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