because it is equal
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A number raised to the second power is a number times itself. This can also be stated as a number squared.
Raising a number to the second power means you are squaring the number, multiplying it by itself. 2 squared= 2*2=4 3 squared=3*3=9
If a number raised to the second power is squared and raised to the third power is cubed, I'm going to take a guess and say that a number raised to the fourth power is tesseracted.
It is raised to the second power
multiply the number by itselfRaising a number to the second power means you are squaring the number, multiplying it by itself. 2 squared= 2*2=43 squared=3*3=9