Jawabanmu

2014-06-08T15:24:16+07:00
(x-1) (x-1) = -2
f(x) = -2 (x+1) = -2x +2
f(x)' = -2
2014-06-08T15:25:12+07:00
f(x) = (x-1)²(x+1)
f'(x) = 2(x-1)(x+1) + (x-1)²
       = 2x² - 2 + x² - 2x + 1
       = 3x² - 2x - 1