Question

Решите уравнение (х-5)^2+4х=25

Answer 1

(x-5)^2 + 4x = 25
$x^{2} + 10x + 25 + 4x =25; x^{2} + 6x = 0; x(x+6) = 0 ;$
[x=0         [x=0
[x+6=0     [x=-6
 Otvet : -6;0.