document.write( "Question 740355: Solve the equation, give an exact solution\r
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document.write( "log4(x+4) + log4(x+4) = 1\r
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document.write( "I cannot figure out the answer. \n" );
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Algebra.Com's Answer #451564 by rothauserc(4718)![]() ![]() You can put this solution on YOUR website! here is a shorter answer\r \n" ); document.write( "\n" ); document.write( "note that log4(4) = 1\r \n" ); document.write( "\n" ); document.write( "then we can rewrite the equation as\r \n" ); document.write( "\n" ); document.write( "log4(x+4) + log4(x+4) = log4(4)\r \n" ); document.write( "\n" ); document.write( "we can then remove the log base 4 from both sides of the =\r \n" ); document.write( "\n" ); document.write( "we get\r \n" ); document.write( "\n" ); document.write( "x+4 + x+4 = 4\r \n" ); document.write( "\n" ); document.write( "2x+8 = 4\r \n" ); document.write( "\n" ); document.write( "2x = -4\r \n" ); document.write( "\n" ); document.write( "and x = -2 \n" ); document.write( " \n" ); document.write( " |