1 (: cause x=1
x to the 2nd power is the same as x2 (x squared) or x*x
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Just X to the second power minus nine. You can't subtract nine from x to the second power unless you know what x is.
2x^2
2.87 x 102 = 287
Would you mind typing it out for me? I don't quite understand exactly what you are asking. For example, x to the second power minus 4x over x to the second power minus 16 would be... x^2-4x/x^2-16 Do you mind typing it out like that? Because what you wrote makes no sense at all.
4,096 or 4 to the sixth power. When multiplying numbers with powers you add the powers if the whole number is identical. 4 squared x 4 squared is 64, x 4 squared is 4096