Question

I need to graduate please.

Which expression is a perfect cube?
x^8
y^24
m^26
s^64

Answer 1

remember

`(a^b)^c=a^(bc)`

note that if
`a^3` is a perfect cube then
`(a^3)^c` is also a perfect cube when c is an integer


`(a^3)^c=a^(3c)`
so if a number is a perfect cube then the power must be divisible by 3

8 is not divisible by 3
24 is divisible by 3
26 is not divisibley by 3
64 is not divisible by 3

the perfect cube is y^24