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3 July, 22:09

Choose the correct simplification of the expression (7x - 3) (4x^2 - 3x - 6).

a. 28x^3 - 33x^2 - 33x - 18

b. 28x^3 33x^2 - 33x 18

c. 28x^3 - 51x^2 - 33x 18

d. 28x^3 - 33x^2 - 33x 18

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  1. 4 July, 00:17
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    Distribute

    (7x) (4x^2-3x-6) + (-3) (4x^2-3x-6) =

    28x^3-21x^2-42x-12x^2+9x+18=

    28x^3-21x^2-12x^2-42x+9x+18=

    28x^3-33x^2-33x+18

    D is the correct answer
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