Exponent Divided by Another ExponentDate: 9/8/96 at 20:55:25 From: MISS JULIE A MALMSTROM Subject: Exponent Divided by Another Exponent I don't know how to solve 7 8 -------- 3 8 This is how I write (8^7)/(8^3) . Date: 9/9/96 at 11:54:17 From: Doctor Robert Subject: Re: Exponent Divided by Another Exponent When you are dividing numbers that are expressed as powers, and the bases of the powers are the same, then you subtract exponents. For example: 5 2 2 x 2 x 2 x 2 x 2 2 -------- = -------------------- = 2 x 2 = 2 3 2 x 2 x 2 2 This is the brute force method. The better way is to say 5 2 (5 - 3) 2 -------- = 2 = 2 3 2 So your problem would be 7 8 (7-3) 4 -------- = 8 = 8 3 8 -Doctor Robert, The Math Forum Check out our web site! http://mathforum.org/dr.math/ |
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