If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (c*d)(x)?


Asked by maham237 @ in Mathematics viewed by 492 People

Answered by maham237 @



C(x)=4x-2 and d(x)= x^{2} +5x
(c*d)(x)
(4x-2)( x^{2} +5x)
Open the brackets and multiply the terms in the order shown below;
4x( x^{2} +5x)-2( x^{2} +5x)
=4 x^{3} +20 x^{2} -2 x^{2} -10x
=4 x^{3} +18 x^{2} -10x

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