document.write( "Question 730950: I'm trying to factor this polynomial using the ac method:
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document.write( "6x^2-35x-5\r
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document.write( "a x c = -30 (factored 2 x 3 x 5)
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document.write( "b=-35\r
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document.write( "b should be the sum of 2 numbers whose product is ac or -30 in this case.\r
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document.write( "I can't figure this out.\r
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document.write( "Thanks for your help. \n" );
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Algebra.Com's Answer #446938 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! I'm trying to factor this polynomial using the ac method: \n" ); document.write( "6x^2-35x-5 \n" ); document.write( "---- \n" ); document.write( "Comment: There are no 2 numbers whose product is -30 and whose sum is -35. \n" ); document.write( "So you cannot use the ac method. \n" ); document.write( "--- \n" ); document.write( "Use the Quadratic formula: \n" ); document.write( "x = [35 +- sqrt(35^2 - 4*6*-5)]/(2*6) \n" ); document.write( "---- \n" ); document.write( "x = [35 +- sqrt(1345)]/12 \n" ); document.write( "--- \n" ); document.write( "x = [35 +- 36.67]/12 \n" ); document.write( "---- \n" ); document.write( "x = 5.97 or x = -0.14 \n" ); document.write( "=========================== \n" ); document.write( "Factors would be (x-5.97)(x+0.14) \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |