


ExponentsPositive ExponentsA positive exponent counts how many times a number is multiplied to itself. For a nonzero number b, we define
In general, for an integer n > 1 b^{n} = b×b×b×...×b (n lots of b) "b^{n}" is called a power of b. We read this as "b to the n". We call b the base and n the exponent. We also read b^{2}as b squared, and b^{3} as b cubed. Example 1
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Exercise 1.Now try these. Attempt them without the use of a calculator. Give the final numerical answer only and not the middle step provided in Example 1. 