quik algebra 1 help

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yea... im doing hw... in "product of the powers" in multiplying monomials... if say this was the problem

a7 x a4 x a

would that be a11
or
a12

what im trying to say is...does the a by it self...would that mean that a1 is applied... or none... btw if u dunno what im talking about tis okay...

ps.. the numbers are exponents
 
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A to the 12th, I think. If I'm not mistaken the rule goes that every base has an assumed exponent of 1 and when your multiplying numbers with exponents, you add the exponents together, then multiply the base normally.

So it's

a to the 7th times a to the fourth times a to the first equals a to the 12th
 

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