Question

решить уравнение
(2-x)-6/(2-x)=1

Answer 1

(2-x)(2-x)-6=(2-x)
(2-x)²-6=2-x
4-2x+x²-6=2-x
x²-x+4=0
D=1+4*6=5²
x1=-2
x2=3

Answer 2

*x²-x-4=0

Answer 3

((2-x)^2-6-2+x)/(2-x)=0
2-x=t
t^2-t-6=0
t1=3
t2=-2
2-x=3 x=-1
2-x=-2 x=4