document.write( "Question 1008878: log base 3(5z+5) - Log base 3(z^2-1)=0 \n" ); document.write( "

Algebra.Com's Answer #624411 by ikleyn(52873) $\"\"$ $\"About$

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document.write( " -  =    -----> \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)   ----->\r\n" );
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document.write( "(z-6)*(z+1) = 0   ----->\r\n" );
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document.write( " = 6,  = -1.\r\n" );
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document.write( "The root  doesn't suit the original equation (why ?).\r\n" );
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document.write( "The only solution of the original equation is z = 6.\r\n" );
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