unbrokenscenes unbrokenscenes

03-08-2016
Mathematics

contestada

what is the product of the polynomials below? (x-9)(x+2)

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KONSETON KONSETON

03-08-2016

(x-9) (x+2)=x²+2x-9x-18=x²-7x-18

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dalendrk dalendrk

03-08-2016

Use distributive property: a(b +/- c) = ab +/ ac.

(x - 9)(x + 2) = (x)(x) + (x)(2) - (9)(x) - (9)(2) = x² + 2x - 9x - 18

= x² -7x -18

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