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Two raised to the power of zero is 1
You evaluate the power of the power first. For example, 4 to the power of (3 to the power of 2) is 4 to the power of 9 which is 262,144
Any number raised to the first power is equal to that number itself. Therefore, 2371 = 237.
-2 to the second power is (-2) x (-2) = +4
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.