Question

(X-4)ao quadrado +2.(X-8)=0

Answer 1

(x - 4 )²  + 2 (x - 8 ) = 0
x² - 2 .x.4 + 4²  + 2 x - 16 = 0
x² - 8 x + 16  + 2 x - 16 = 0
x²  - 6 x = 0
x(x - 6 ) = 0
x = 0
x - 6 = 0
x = 6
S = {0 ; 6 }