Answer
9/16
Work Step by Step
The exponent tells us the number of times we multiply the number by itself.
If the exponent is located outside the parenthesis then we must distribute the exponent to both the numerator and the denominator.
Therefore, it follows that:
$ (\frac {3}{4})^{2} \\\\= \frac {3^{2}}{4^{2}} \\\\= \frac{9}{16}$