Answer:
numerator = 4x + 6
Explanation:
x²+3x + 2
(x+2)(x+1)
x/(x+2)(x+1) + 3(x+2)/(x+2)(x+1)
(x+3x+6)/(x+2)(x+1)
(4x+6)/(x+2)(x+1)
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