# Simplify (x − 3)(x2 + 7x − 8). a x3 − 11x2 − 8x + 24 b x3 + 7x2 − 11x + 24 cx3 + 4x2 − 29x + 24 d x3 + 10x2 + 13x + 24

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QUESTION POSTED AT 29/05/2020 - 01:12 AM

(x - 3)(x^2 + 7x - 8) =

x(x^2 + 7x - 8) - 3(x^2 + 7x - 8) =

x^3 + 7x^2 - 8x - 3x^2 - 21x + 24 =

x^2 + 4x^2 - 29x + 24 <==

x(x^2 + 7x - 8) - 3(x^2 + 7x - 8) =

x^3 + 7x^2 - 8x - 3x^2 - 21x + 24 =

x^2 + 4x^2 - 29x + 24 <==

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