Jawabanmu

2014-08-19T15:40:32+07:00
H (x) = 2f(x) + f(x) x g(x)
= 2(3x^2 + x - 1) + (3x^2 + x - 1) x (2x+3)
= 2(3x^2 + x -1) + 6x^3 + 9x^2 + 2x^2 + 3x - 2x - 3
= 2(3x^2 + x - 1) + 6x^3 + 11x^2 + x - 3
= 6x^2 + 2x - 2 + 6x^3 + 11x^2 + x - 3
= 6x^3 + 17x^2 + 3x -5