x^3+x^2+2x = x(x^2+x+2)
2(x + 13)
(2x - 3)(x + 2)
2x^2 + 13 doesn't have rational factors.
I assume you mean factors for 4x2+10x+6.(2x+3)(2x+2).
4x3+10x2+2x+5= (2x+5)(2x2+1)
(2x + 7)(x - 2)
(2x+3)(x+3)
4
You have to experiment with different factors of 2, and different factors of 15. In this case, 2x2 - 11x + 15 = (2x - 5) (x - 3)
14
Ah, what a happy little question! When we have 2x plus 2x, we can combine the like terms to get 4x. It's like adding two beautiful trees together to create a lovely little forest. Just remember, math is like painting, and there are many ways to create something wonderful.