document.write( "Question 420909:
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document.write( "This is the problem I am trying to work out. I have tried foiling, quadratic equation, completing the square, but I am not coming up with a good answer. If you could help me I would appreciate it. I don't want to know the answer as much as how to do it. \n" );
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Algebra.Com's Answer #294078 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "; \n" ); document.write( "square both sides \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "FOIL the Left side \n" ); document.write( "(x+2) - \n" ); document.write( ": \n" ); document.write( "Combine like terms, move the radical to right \n" ); document.write( "x + x -x + 2 - 3 + 6 = \n" ); document.write( "; \n" ); document.write( "FOIL inside the radical \n" ); document.write( "x + 5 = \n" ); document.write( ": \n" ); document.write( "square both sides \n" ); document.write( "x^2 + 10x + 25 = 4(x^2 - x - 6) \n" ); document.write( "x^2 + 10x + 25 = 4x^2 - 4x - 24 \n" ); document.write( ": \n" ); document.write( "Combine like terms on the right \n" ); document.write( "0 = 4x^2 - x^2 - 4x - 10x - 24 - 25 \n" ); document.write( ": \n" ); document.write( "3x^2 - 14x - 49 = 0 \n" ); document.write( "Factors to \n" ); document.write( "(3x + 7)(x - 7) = 0 \n" ); document.write( "positive solution is all want here \n" ); document.write( "x = + 7 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check solution in the original equation \n" ); document.write( " \n" ); document.write( "you can see that it checks out \n" ); document.write( " |