It is an expression whose value will depend on the value of the variable x.
if you take your time youll figure out its e=mc2
(watts equal) voltage times current (e x I ) 120 x 20 resistance times current squared (r x I squared) 6 ohms x20 squared voltage squared divided by resistance (E squared divided by resistance) 120squared divided by 6 check OHMS LAW,
Yes, x times x equals x squared.
16 to the 4th power, or 16 x 16 x 16 x 16 = 65,536
If you mean ex squared, the answer is e2x
No. Cos squared x is not the same as cos x squared. Cos squared x means cos (x) times cos (x) Cos x squared means cos (x squared)
yes
x squared means x times x. Since x can be any number, x times x can also be any number.
x cubed
We know that when you submit questions you aren't free to use the right format to make the mathematical terms crystal clear. It is likely that you mean "x squared times 6 plus x squared times 2", which is clearer. You can factor out the "x squared" and you will see that you get "x squared times 8". You COULD mean (6x) squared plus (2x) squared, which would be different. 6x times 6x would equal x squared times 36, so your answer will be much different.
x cubed, or x³
x2 + 8x2 = 9x2