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= 3 *pangkat* x²+3x+4 = 3² *pangkat* -x-1
= 3 *pangkat* x²+3x+4 = 3 *pangkat* -2x-2
= x²+3x+4 = -2x-2
= x²+3x+4+2x+2 = 0
= x² + 5x +6 +0
(x+2) (x+3)
x = 2 atau x + 3