A number raised to the power "a" is multiplied by itself "a" times. For example, 5 raised to the power 3 is 5x5x5=125. 2 raised to the power 5 is 2x2x2x2x2=32.
Yes (when the power is a positive integer). It is possible to have powers that are negative, rational, irrational and even complex and there are similar rules for dealing with them.
Yes. Power may also be referred to as the exponent symbolically. E.g the superscript number 2 is the second power or square to the preceding number. Superscript 3 is the cube or third power,...