Question

solve (x+1)(+2)=(x-3)(x-4)​

Answer 1

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

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

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

${x}^{2} + 3x + 2 = {x}^{2} - 7x + 12$

$3x + 2 = - 7x + 12$

$3x + 7x = 12 - 2$

$10x = 10$

$x = 1unit$