82
the 2 is the exponent
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Prime factors in exponents: 25*52 = 800
147 49,3 7,7,3 3 x 7^2
If you are multiplying powers of the same base (like 24 times 211), yes, you add the exponents.
you do not do anything when you add numbers with exponents. you just figure out the answer. it is only if you multiply numbers with exponents, where you add the exponents..
like terms