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Rules of exponents
Evaluate exponents
To evaluate an exponential expression, write each factor as many times as indicated by the exponential. Then multiply:

 34 = 3·3·3·3 = 81 23·32 = (2·2·2)·(3·3) = 8·9 = 72

Evaluate (-3)2 and -32
(-3)2 = (-3)·(-3) = 9
-32 = -(3·3) = -9

Evaluate

Write the following numbers in exponential form:       