Question

$$(\frac{75}{5})^{3}\times\frac{(9^{2})^{2}}{5^{2}-4^{2}}$$

Answer

2460375

Solution


Simplify  \(\frac{75}{5}\)  to  \(15\).
\[{15}^{3}\times \frac{{({9}^{2})}^{2}}{{5}^{2}-{4}^{2}}\]
Simplify  \({5}^{2}\)  to  \(25\).
\[{15}^{3}\times \frac{{({9}^{2})}^{2}}{25-{4}^{2}}\]
Simplify  \({4}^{2}\)  to  \(16\).
\[{15}^{3}\times \frac{{({9}^{2})}^{2}}{25-16}\]
Simplify  \(25-16\)  to  \(9\).
\[{15}^{3}\times \frac{{({9}^{2})}^{2}}{9}\]
Simplify  \({15}^{3}\)  to  \(3375\).
\[3375\times \frac{{({9}^{2})}^{2}}{9}\]
Use Power Rule: \({({x}^{a})}^{b}={x}^{ab}\).
\[3375\times \frac{{9}^{4}}{9}\]
Use this rule: \(a \times \frac{b}{c}=\frac{ab}{c}\).
\[\frac{3375\times {9}^{4}}{9}\]
Use Quotient Rule: \(\frac{{x}^{a}}{{x}^{b}}={x}^{a-b}\).
\[3375\times {9}^{4-1}\]
Simplify  \(4-1\)  to  \(3\).
\[3375\times {9}^{3}\]
Simplify  \({9}^{3}\)  to  \(729\).
\[3375\times 729\]
Simplify.
\[2460375\]