\(2x^2-7x+5=0\)
\(\Rightarrow2x^2-2x-5x+5=0\)
\(\Rightarrow\left(2x^2-2x\right)-\left(5x-5\right)=0\)
\(\Rightarrow2x\left(x-1\right)-5\left(x-1\right)=0\)
\(\Rightarrow\left(x-1\right)\left(2x-5\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x-1=0\\2x-5=0\end{matrix}\right.\Rightarrow\left[{}\begin{matrix}x=1\\x=\dfrac{5}{2}\end{matrix}\right.\)