Question

(y-4)2-7(2-y) =(y+5) (y-2)

Answer 1

Respuesta:

$(y - 4) \times 2 - 7 \times (2 - y) = (y + 5) \times (y - 2) \\ (y - 4) \times - 5 \times (2 - y) = (y + 5) \times (y - 2) \\ (y - 4) \times ( 5y - 10) = (y + 5) \times (y - 2) \\ 5 {y}^{2} - 30 y+ 40 = {y}^{2} + 3y - 10 \\ 5 {y}^{2} - 30y + 40 - {y}^{2} - 3y + 10 = 0 \\ 4 {y}^{2} - 33y + 50 = 0$

espero te ayude