\(\left(3x-1\right)^2+\left(x+3\right)^2-10\left(x+1\right)\left(x-1\right)=0\)
\(\Leftrightarrow9x^2-6x+1+x^2+6x+9-10x^2+10=0\)
\(\Leftrightarrow20=0\left(VLý\right)\)
Vậy \(S=\varnothing\)
\(\Leftrightarrow9x^2-6x+1+x^2+6x+9-10x^2+10=0\\ \Leftrightarrow20=0\left(vô.lí\right)\)
Vậy pt vô nghiệm
\(\left(3x-1\right)^2+\left(x+3\right)^2-10\left(x+1\right)\left(x-1\right)=0\)
\(\Leftrightarrow9x^2-6x+1+\left(x+3\right)^2-10\left(x+1\right)\left(x-1\right)=0\)
\(\Leftrightarrow9x^2-6x+1+x^2+6x+9-10\left(x+1\right)\left(x-1\right)=0\)
\(\Leftrightarrow9x^2+1+x^2+9-10\left(x+1\right)\left(x-1\right)=0\)
\(\Leftrightarrow10x^2+1+9-10\left(x+1\right)\left(x-1\right)=0\)
\(\Leftrightarrow20=0\)
Không có nghiệm nhé !!
