Can someone show me how to solve this(x^2+3x-1)(x^2-x+2)?

Answer 1

What to solve? factorization? roots?
There is no more factorization in integer domain. But in real:
(x^2+3x-1)(x^2-x+2)
= (x + 1.5 + sqrt(13)/2)(x + 1.5 - sqrt(13)/2)(x^2-x+2)
and further in complex:
= (x + 1.5 + sqrt(13)/2)(x + 1.5 - sqrt(13)/2)(x - 0.5 + i*sqrt(7)/2)(x - 0.5 - i*sqrt(7)/2)