Question

(х-1)*(х-7)=0 решите пожалуйста

Answer 1

(х-1)*(х-7)=0
х - 1 = 0 => x=1
или
х - 7 = 0 => x=7

Answer 2

(х-1)*(х-7)=0
x^2 - x- 7x +7 = 0
x^2-8x+7=0
D = 64 - 28 =36
x1= 8+6/2 = 7
x2 = 8-6/2 = 1