- #1
Kushal
- 438
- 1
Homework Statement
let x and y be positive integers and n = x^y
If n + n^(1/2) + n ^(1/3) = 76, then x cannot equal
A. 64
B. 16
C. 8
D. 4
E. 2
Homework Equations
The Attempt at a Solution
i really don't know how to approach this question. i tried simplifying the powers and write them in terms of x and y, e.g. x^y + x^(y/2) + x ^(y/3) = 76 and i expressed the answers as powers of 2 but i couldn't find a way out.