Question

(×+1)(2×+5)=(2×+3)(×-4)+5

Answer 1

Respuesta:

$(x + 1)(2x + 5) = (2x + 3)(x - 4) + 5 \\ 2 {x }^{2} + 5x + 2x + 5 = 2 {x}^{2} - 8x + 3x - 12 + 5 \\ 7x + 5 = - 5x - 7 \\ 7x + 5x = - 7 - 5 \\ 12x = - 12 \\ x = - 12 \div 12 \\ x = - 1$