# How do you factor the expression 4x^(3/2) − 12x^(1/2) + 8x^(−1/2)?

I found: $\frac{4 \left(x - 1\right) \left(x - 2\right)}{\sqrt{x}}$
${x}^{\frac{a}{b}} = {\sqrt[b]{x}}^{a}$
${x}^{-} a = \frac{1}{x} ^ a$