Question

Which of the following is the complete factorization of the polynomial below
x3 + x2 - 17x+15

Answer 1

`\boxed{\sf \ \ \ (x-1)(x-3)(x+5) \ \ \ }`

Explanation:

Hello,

1 is a trivial zero so we can write

`x^3+x^2-17x+15=(x-1)(x^2+2x-15) = (x-1)(x^2+5x-3x-15)\\==(x-1)(x(x+5)-3(x+5))=(x-1)(x-3)(x+5)`

hope this helps

Answer 2

The awnser is directly above me