Question 921924
Evaluate each expression that results in a rational number. 

1) 289^1/2

2)8^-2/3

3) (9/16)^-1/2

Confused on how to do these any help is really appreciated. Math is not my stongest area. Thanks in advance


1.
<pre>
289<sup>1/2</sup>____{{{sqrt(289)}}}_____{{{highlight_green(17)}}}</pre>2.
<pre>
8<sup>-2/3</sup>_____{{{(root (3, 8))^(- 2)}}}______{{{2^(- 2)}}}______{{{1/2^2}}}_______{{{highlight_green(1/4)}}}</pre>3.
<pre>
{{{(9/16)^(-1/2)}}}_____{{{1/(9/16)^(1/2)}}}______{{{1/sqrt(9/16)}}}______{{{1/(3/4)}}}_____{{{1/1}}}÷{{{3/4}}}_______{{{(1/1) * (4/3)}}}_______{{{highlight_green(4/3)}}}</pre>