Trying to find the right answer to this..

(5 - 2x) x ( x + 3) = 5(x + 3) - 2x(x + 3) = 5x + 15 - (2x X x) - (2x X 3) = 5x + 15 - 2x 2 - 6x = -2x 2 +(- 6 + 5)x + 15 = 15 - x * 2x 2

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Algebraic Expressions and Identities

Short Answer Type

71.

Multiply the binomials

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72.
Find the4 product:

(5 - 2x)(3 + x)

(5 - 2x) x ( x + 3) = 5(x + 3) - 2x(x + 3)
                         = 5x + 15 - (2x X x) - (2x X 3)
                         = 5x + 15 - 2x²- 6x
                         = -2x²+(- 6 + 5)x + 15
                          = 15 - x * 2x²

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