document.write( "Question 220517: Can someone please help me?
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document.write( "Solve for x in terms of k\r
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document.write( "log{subscript 5}x + log{subscript 5)(x+2) = k\r
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document.write( "x= ?
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document.write( "Find x if k=8 ? \n" );
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Algebra.Com's Answer #165522 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Solve for x in terms of k \n" ); document.write( "log{subscript 5}x + log{subscript 5)(x+2) = k \n" ); document.write( "x= ? \n" ); document.write( "Find x if k=8 ? \n" ); document.write( "------------------------ \n" ); document.write( "log5(x) + log5(x+2) = k \n" ); document.write( "Rewrite: \n" ); document.write( "log4[x(x+2)] k \n" ); document.write( "x^2+2x = 4^k \n" ); document.write( "-------------------- \n" ); document.write( "Now, if k = 8 you get: \n" ); document.write( "x^2 + 2x = 4^8 \n" ); document.write( "--- \n" ); document.write( "x^2+2x- 65536 = 0 \n" ); document.write( "Comment: \n" ); document.write( "This does not factor neatly. \n" ); document.write( "It can be solved using the quadratic formula. \n" ); document.write( "I'll leave that to you. \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |