<PRE><B>Question 779264</B>
(x+7)^(4/3) = 16
Cube both sides and you have
(x+7)^4 = 4096
Find the 4th root of both sides
x + 7 = +/-{{{4sqrt(4096)}}}
Two solutions
x + 7 = +8
x = 1
and
x - 7 = -8
x = -8 - 7
x = -15 is the 2nd solution
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Check this in your calc: enter (-15+7)^(3/4) results is 16</PRE>