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= (4+y)(3-y)
2. x²-4 = (x+2)(x-2)
x²-3x+2 = x²+2x+1x+2 = x(x+2)+1(x+2)
= (x+1)(x+2)
maka, x²-4 : x²-3x+2 = (x+2)(x-2)
(x+1)(x+2)
= (x-2)
(x+1)
semoga membantu :)