\(\left(x-2\right)^2-\left(-x+1\right)=0\)
\(\Leftrightarrow\left(x-2\right)\left(x-2\right)-\left(-x+1\right)=0\)
\(\Leftrightarrow x^2-2x-2x+4+x-1=0\)
\(\Leftrightarrow x^2-3x+3=0\)( vô nghiệm )
\(\left(x-2\right)^2-\left(-x+1\right)=0\)
\(< =>\left(x-2\right)^2-\left(1-x\right)=0\)
\(< =>x^2-4x+4-1+x=0\)
\(< =>x^2-3x-3=0\)(vô nghiệm)
(x-2)^2-(-x+1)=0
x^2-4x+4+x-1=0
x^2-3x+3=0
x^2-3x=-3
x(x-3)=-3
x=-3 hoac x-3=-3
x=-3 hoac x=0
(x-2)2-(-x+1)=0
(x-2)2- (1-x)=0
x2-4x+4-1+x=0
x2-3x+3=0
=>Vô nghiệm
