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Nine
-3
Seems to us that any value at all can be squared.
She isn't. 4x squared is 4 times (x squared). That is, 4 times (3 squared) = 4 times 9. If you want it to be the square of 4x (which would be the square of 4 times 3, ie, 12), you have to write it as (4x)squared.
93 to the power of two is also known as 3 squared which means 3 X 3= 9