Сократите дробь х^2+7х+12/х+4

Question

Сократите дробь х^2+7х+12/х+4

Answer 1

X²+7x+12=0
D=49-48=1
x₁= -7-1 / 2 = -4
x₂= -7+1 / 2 = -3
x²+7x+12=(x+4)(x+3)
(x+4)(x+3)/(x+4) = x+3