document.write( "Question 267182: solve for x\r
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document.write( "3 = log 8 + 3 log x\r
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document.write( "Here's what I tried:\r
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document.write( "3 = log 8 + log x^3
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document.write( "3 = log 8x^3
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document.write( "10^3 = 10^(log8x^3)
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document.write( "3 = 8x^3
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document.write( "3/8 = x^3
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document.write( "(use the calculator to find the cube root of 3/8)
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document.write( "(but I know the answer is suppose to be 5) \n" );
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Algebra.Com's Answer #196154 by jsmallt9(3758)![]() ![]() ![]() You can put this solution on YOUR website! You're going to kick yourself when you see your mistake: \n" ); document.write( "solve for x \n" ); document.write( "3 = log 8 + 3 log x \n" ); document.write( "Here's what I tried: \n" ); document.write( "3 = log 8 + log x^3 \n" ); document.write( "3 = log 8x^3 \n" ); document.write( "10^3 = 10^(log8x^3) \n" ); document.write( "This is all correct up to this point. And, as your works hows, 10^(log8x^3) = 8x^3. But what is 10^3? It is 1000. So your equation becomes: \n" ); document.write( "1000 = 8x^3 \n" ); document.write( "Divide by 8 \n" ); document.write( "125 = x^3 \n" ); document.write( "Cube root of each side: \n" ); document.write( "5 = x \n" ); document.write( " |