Jawabanmu

2014-06-17T20:47:54+07:00
√(x+2) + 4-x = 0
√(x+2) = x-4
(√(x+2))² = (x-4)²
x + 2 = x²-8x+16
x²-9x+14 = 0
(x-2)(x-7) = 0
x = 2 atau x = 7
HP {2,7}