\(8,\Leftrightarrow4x=-2\)
\(\Leftrightarrow x=-\dfrac{1}{2}\)
\(9,\Leftrightarrow4\left(x+1\right)=-6\)
\(\Leftrightarrow4x+4+6=0\)
\(\Leftrightarrow4x=-10\)
\(\Leftrightarrow x=-\dfrac{5}{2}\)
\(10,\Leftrightarrow\left(2x-1\right)^2=25\)
\(\Leftrightarrow2x-1=5\)
\(\Leftrightarrow2x=6\)
\(\Leftrightarrow x=3\)
8)\(=>4x=-2=>x=-\dfrac{1}{2}\)
9)\(=>4x+1=-6=>4x=-7=>x=-\dfrac{7}{4}\)
10)\(=>\left(2x-1\right)^2=25=>\left[{}\begin{matrix}2x-1=5\\2x-1=-5\end{matrix}\right.\)
\(=>\left[{}\begin{matrix}2x=6\\2x=-4\end{matrix}\right.=>\left[{}\begin{matrix}x=3\\x=-2\end{matrix}\right.\)
