Question

The sum of the polynomial x^3+7x^2+8 and the product of the polynomials x^2–6x+4 and x–1

Answer 1

I am also not sure, because I also asked this question.

Answer 2

We have been asked to simplify

$(x^3+7x^2+8)+(x^2-6x+4)(x-1)\\ \\ \text{First multiply the terms inside the parenthesis using FOIL we get}\\ \\ =(x^3+7x^2+8)+(x^3-6x^2+4x-x^2+6x-4)\\ \\ \text{Re-write the like terms together and simplify we get}\\ \\ =(x^3+7x^2+8)+(x^3-7x^2+10x-4)\\ \\ =x^3+7x^2+8+x^3-7x^2+10x-4\\ \\ \text{Add the like terms together again and simplify we get}\\ \\ =2x^3+10x+4$