Question 70585
The 4th root of 80 is asking what number multiplied by itself 4 times will give you 80. For instance the 4th root of 16 is 2, since 2*2*2*2=16, but now we want to find a number to raise to the 4th power to get 80 (ie x*x*x*x=80). So we must take the 4th root to find it. Your calculator can easily find the 4th root of 80, after that answer just divide by 9.
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<sub>4</sub>
 {{{(sqrt(80))/9=2.990697562/9=0.332299729160}}} </pre>