Jawabanmu

2014-09-12T01:40:35+07:00
A. f(x) +g(x)
2x + 1 + x^2 - 1
x^2 + 2x
b. f(x) - g(x)
2x + 1 -(x^2 - 1)
-x^2 + 2x + 2
c. f(x).g(x)
(2x + 1)(x^2 - 1)
2x^3 + x^2 - 2x -1
d. f(x):g(x)
2x + 1/x^2 -1
2+1/x-1
3/x-1