Question

(x+1)(x+2)-(x+3)(x+4)=0

Answer 1

$x^{2} +2x +x+2- x^{2} -4x-3x-12=0$

$-4x-10=0$

$-4x = 10$

$x= - frac{10}{4}$

$x= -2 frac{1}{2}$