Simplify the ExpressionDate: 08/21/97 at 01:34:52 From: Bobby Mummon Subject: Pre-calculus Simplify the expression and eliminate any negative exponents. I am stuck on this problem: (4b)^1/2(8b^2/5) Date: 08/27/97 at 10:16:59 From: Doctor Rob Subject: Re: Pre-calculus Use the Laws of Exponents. Two of them say (1) (ab)^c = a^c*b^c, and (2) a^(b+c) = a^b*a^c. (4*b)^(1/2)*(8*b^(2/5)) = 4^(1/2)*b^(1/2)*8*b^(2/5), by using (1) above, = 2*8*b^(1/2 + 2/5), by using the Commutative Law and (2) above, = 16*b^(9/10). -Doctor Rob, The Math Forum Check out our web site! http://mathforum.org/dr.math/ |
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