dmaster287tyucjcj dmaster287tyucjcj

29-06-2017
Mathematics

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What is the product of the polynomials below?

(x - 7)(x2 + 3x - 3)

A. x3 - 7x2 - 24x + 21
B. x3 - 7x2 - 3x + 21
C. x3 - 4x2 - 3x + 21
D. x3 - 4x2 - 24x + 2

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tafa1030 tafa1030

03-07-2017

the answer is d. when x by x^2 and then by 3x and then by -3. after multiply -7 by x^2 and then by 3x and then by -3. after that add the x's.

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