document.write( "Question 1027293: Hi, I'm having trouble solving and figuring what to do for this problem:\r
\n" ); document.write( "\n" ); document.write( "Solve log base 2 of x + log base 2 of (x+7) = 3\r
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Algebra.Com's Answer #642500 by ikleyn(52786) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "Hi, I'm having trouble solving and figuring what to do for this problem:\r
\n" ); document.write( "\n" ); document.write( "Solve log base 2 of x + log base 2 of (x+7) = 3\r
\n" ); document.write( "\n" ); document.write( "Thank you.
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document.write( " +  = ,   --->\r\n" );
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document.write( " = ,   ---> \r\n" );
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document.write( "x*(x+7) = ,   --->\r\n" );
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document.write( " = ,   --->\r\n" );
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document.write( " = ,  \r\n" );
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document.write( "Factor left side:\r\n" );
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document.write( "(x+8)*(x-1) = 0.\r\n" );
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document.write( "The roots are x=-8 and x=1.\r\n" );
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document.write( "-8 doesn't fit because of logarithm.\r\n" );
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document.write( "x=1  fits perfectly.\r\n" );
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