document.write( "Question 62773: I need help trying to figure this one out. Please.
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document.write( "x2 – 4x – 5 = 0 Solve by factoring? Could you please help me figure this one out? \n" );
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Algebra.Com's Answer #43602 by uma(370)![]() ![]() ![]() You can put this solution on YOUR website! x^2 - 4x - 5 = 0\r \n" ); document.write( "\n" ); document.write( "Here we need to find two numbers whose sum is -4 and whose product is -5.\r \n" ); document.write( "\n" ); document.write( "Clearly the numbers are -5 and 1.\r \n" ); document.write( "\n" ); document.write( "==> x^2 + x - 5x - 5 = 0 [splitting the middle term]\r \n" ); document.write( "\n" ); document.write( "==> x(x+1) - 5(x+1) = 0 [taking out the common factor]\r \n" ); document.write( "\n" ); document.write( "==> (x+1)(x-5) = 0\r \n" ); document.write( "\n" ); document.write( "==> x + 1 = 0 or x - 5 = 0\r \n" ); document.write( "\n" ); document.write( "==> x = -1 or x = 5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Good luck!!! \n" ); document.write( " |