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Let f(x)= -7x 3 -6x 2 -6x+6 and g (x)=6x3-5x2-7x-1. a. Find (f-g)(x) b. Find (f-g)(-1) please help I am having problems solving this. My

Let f(x)= -7x³-6x²-6x+6 and g (x)=6x3-5x2-7x-1.

a. Find (f-g)(x)

b. Find (f-g)(-1)

please help I am having problems solving this.

My answers are

a. -13x³-11x²+x+7

b. 8

I'm not sure if they are correct

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