X2
A number to the second power is squared.
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If a number is to the power of 2 it is "squared". The number that is squared is the "root".
I believe A2 times A2=A4 (A to the power of 4).
The "second power" means squared. "Squared" means multiplied by itself. Thus M to the second power = M times M.
Yes. Of course. x to the power of two is x2 and x squared is x2
4z squared (z+4) (z+4)