document.write( "Question 790558: sqrt(x+3) = x - 3\r
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document.write( "I eliminated the square root by squaring both sides and got:
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document.write( "x + 3 = x^2 -6x +9
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document.write( "Combining like terms and putting into quadratic equation:
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document.write( "0 = x^2 -7x -6\r
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document.write( "No two numbers satisfy the above, and I couldn't solve it via the quadratic formula. What do I do next?\r
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document.write( "Thanks in advance. \n" );
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Algebra.Com's Answer #479200 by solver91311(24713) You can put this solution on YOUR website! \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "How did you end up with -6 as a constant term?\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Work it out again, paying very careful attention to your signs this time and see if you don't end up with\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Which does, indeed, factor quite tidily.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Why you were unable to solve the incorrect equation using the quadratic formula is a mystery. It should have worked fine giving two real number zeros. You always will have two real number zeros if the signs on a and c are opposite.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "John \n" ); document.write( " \n" ); document.write( "Egw to Beta kai to Sigma \n" ); document.write( "My calculator said it, I believe it, that settles it \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " |