$(3$ pts$)$ Use the trigonometric substitution $x=2sin()$ to find the indefinite integral. If necessary, use the identity $si{n}^2()+co{s}^2()=1.$

${\displaystyle \underset{\phantom{}}{\overset{\phantom{}}{}}}\frac{-20}{x^2\sqrt[\phantom{2}]{4-x^2}}dx$