a) \(\sqrt{36\left(x-5\right)^2}=6\left|x-5\right|\)
\(=6\left(x-5\right)\) (khi \(x\ge5\))
hoặc \(=6\left(5-x\right)\) (khi \(x< 5\))
b) \(\sqrt{\dfrac{1}{4}\left(1-x\right)^2}=\dfrac{1}{2}\left|1-x\right|\)
\(=\dfrac{1}{2}\left(1-x\right)\) (khi \(x\le1\))
hoặc \(=\dfrac{1}{2}\left(x-1\right)\) (khi \(x>1\))
c) \(\sqrt{x^2\left(2x-4\right)^2}=\left|x\right|\left|2x-4\right|\)
\(=x\left(2x-4\right)\) (khi \(x\ge2\))
hoặc \(=x\left(4-2x\right)\) (khi \(0\le x< 2\))
hoặc \(=-x\left(4-2x\right)\) (khi \(x< 0\))