document.write( "Question 147296: x^2-2x-15=0 \n" ); document.write( "
Algebra.Com's Answer #107665 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! x^2-2x-15=0 \n" ); document.write( ". \n" ); document.write( "Attempt to \"factor\" first \n" ); document.write( "Failing that, then use the \"quadratic equation\". \n" ); document.write( ". \n" ); document.write( "When factoring: \n" ); document.write( "ask yourself what two factors of 15 will combine to give you -2. \n" ); document.write( ". \n" ); document.write( "Factors of 15: \n" ); document.write( "1 15 \n" ); document.write( "3 5 \n" ); document.write( ". \n" ); document.write( "Therefore, it would be: \n" ); document.write( "(x+3)(x-5) = 0 \n" ); document.write( ". \n" ); document.write( "To find the solution, set each of the above factors to zero and solve: \n" ); document.write( "x+3 = 0 \n" ); document.write( "x = -3 \n" ); document.write( ". \n" ); document.write( "x-5=0 \n" ); document.write( "x = 5 \n" ); document.write( ". \n" ); document.write( "Solution: {0,5} \n" ); document.write( " \n" ); document.write( " |