Question

Answer 1

\(a,\Rightarrow8x\left(x-2\right)=0\Rightarrow\left[{}\begin{matrix}x=0\\x=2\end{matrix}\right.\\ b,\Rightarrow\left(x-4\right)\left[1-2\left(x-4\right)\right]=0\\ \Rightarrow\left(x-4\right)\left(9-2x\right)=0\Rightarrow\left[{}\begin{matrix}x=4\\x=\dfrac{9}{2}\end{matrix}\right.\\ c,\Rightarrow x\left(x-5\right)-4\left(x-5\right)=0\\ \Rightarrow\left(x-4\right)\left(x-5\right)=0\Rightarrow\left[{}\begin{matrix}x=4\\x=5\end{matrix}\right.\)