Question

resolver ecuación
(x - 5 )2 = x (x-8) + 11​

Answer 1

2x-10=x^2-8x+11
2x-10-x^2+8x-11=0
10x-21-x^2=0
-10x+21+x^2=0
x^2-10x+21=0
x^2-3x-7x+21=0
x(x-3)-7(x-3)=0
(x-3)(x-7)=0
x-3=0
x-7=0

x1=3
x2=7