Madhavi1990 wrote:
I did actually, but didnt understand why 144 is the answer if its 12^2 (f(x) = x^2
f(f(x)) = (x^2)^2 = x^4. Isn't it supposed to be a power of 4? How does 12 feature as a power of 4? Please do clarify
Madhavi1990
The question is asking which option is not of the type x^4
Clearly 12^2 is not of the type x^4 .. Hope that helps..
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