negative fractional exponent question

Question

0

631

2

Why does the calculator say -27^(-2/3) is "not real"?

Guest Dec 5, 2013

Guest · Answer 1 · 2013-12-05T08:16:58

The -2 in the exponent would indicat the negative square root of (-27)^3, this is not real???

Guest · Answer 2 · 2013-12-05T08:25:08

-27^(-2/3) implies (-27)^-2=(1/-27)2=1/729 now youget t he cube root of this and it is9. somehow the machine cannot accept the negative exponent.