Question

$$\sqrt{ { \left( \frac{ 3 }{ 2 } \right) }^{ 2 } -4 } ( \frac{ -1 }{ 2 } )$$

Answer

-(sqrt(7)*IM)/4

Solution


Use Division Distributive Property: \({(\frac{x}{y})}^{a}=\frac{{x}^{a}}{{y}^{a}}\).
\[\sqrt{\frac{{3}^{2}}{{2}^{2}}-4}\times \frac{-1}{2}\]
Simplify  \({3}^{2}\)  to  \(9\).
\[\sqrt{\frac{9}{{2}^{2}}-4}\times \frac{-1}{2}\]
Simplify  \({2}^{2}\)  to  \(4\).
\[\sqrt{\frac{9}{4}-4}\times \frac{-1}{2}\]
Simplify  \(\frac{9}{4}-4\)  to  \(-\frac{7}{4}\).
\[\sqrt{-\frac{7}{4}}\times \frac{-1}{2}\]
Simplify  \(\sqrt{-\frac{7}{4}}\)  to  \(\sqrt{\frac{7}{4}}\imath \).
\[\sqrt{\frac{7}{4}}\imath \times \frac{-1}{2}\]
Simplify  \(\sqrt{\frac{7}{4}}\)  to  \(\frac{\sqrt{7}}{\sqrt{4}}\).
\[\frac{\sqrt{7}}{\sqrt{4}}\imath \times \frac{-1}{2}\]
Since \(2\times 2=4\), the square root of \(4\) is \(2\).
\[\frac{\sqrt{7}}{2}\imath \times \frac{-1}{2}\]
Simplify.
\[\frac{-\sqrt{7}\imath }{4}\]
Move the negative sign to the left.
\[-\frac{\sqrt{7}\imath }{4}\]