document.write( "Question 603210: Still trying to help my son get through this.\r
\n" ); document.write( "\n" ); document.write( "x^-3/4=8^-1\r
\n" ); document.write( "\n" ); document.write( "I know you have to make like bases but how do I do that with an 8 and x?
\n" ); document.write( "also..\r
\n" ); document.write( "\n" ); document.write( "7^(a-sqrt b) * 7^(a+sqrt b)= 2a is what he has for an answer, why do the 7s cancel out in this chapter? He is sure they do, I thought the answer would be 49^2a
\n" ); document.write( "Thank you!
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Algebra.Com's Answer #380626 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
x^-3/4=8^-1
\n" ); document.write( "I know you have to make like bases but how do I do that with an 8 and x?
\n" ); document.write( "also..
\n" ); document.write( "----
\n" ); document.write( "x^(-3/4) = 8^(-1)
\n" ); document.write( "------
\n" ); document.write( "x^(-3/4) = 2^(-3)
\n" ); document.write( "----
\n" ); document.write( "[x^(-3/4)]^(-4/3) = [2^(-3)]^(-4/3)
\n" ); document.write( "-----
\n" ); document.write( "x = 2^4
\n" ); document.write( "x = 16\r
\n" ); document.write( "\n" ); document.write( "==============
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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\n" ); document.write( "7^(a-sqrt b) * 7^(a+sqrt b)= 2a is what he has for an answer, why do the 7s cancel out in this chapter? He is sure they do, I thought the answer would be 49^2a
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