How do you evaluate (-1)^(2/3)(1)23?

2 Answers
Mar 15, 2018

The result is 11.

Explanation:

Use this exponent/radical rule:

color(green)x^(color(red)m/color(blue)n)=rootcolor(blue)n(color(green)x^color(red)m)xmn=nxm

Now here's the expression:

color(white)=(color(green)-color(green)1)^(color(red)2/color(blue)3)=(1)23

=rootcolor(blue)3((color(green)-color(green)1)^color(red)2)=3(1)2

=rootcolor(blue)3 1=31

=1=1

That's the result. Hope this is the answer you were looking for!

Mar 15, 2018

1

Explanation:

x^(2/3)x23 power means the the wholes square of the cubic root of xx.

Thus, the cubic root of -1 is -1...... and the whole square of the -1 is always +1..