document.write( "Question 969380: Hello. I am trying to factor this equation 15x^2 - 24x - 12. I then multiplied 15 x -12 = -180. From here I need to found -30 x 6 which if you subtract 6 from -30 = -24. so now the equation looks like this:
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document.write( "15x^2 + 6x - 30x - 12. So I divide: 15x^2 + 6x/2x and -30x-12/-6 which now gave me 3x(5x+2)-6(5x+2) I continue to think my answer is (5x+2)(3x-6). unfortunately, the answer key has the answer as 3(5x+2)(x-2) what did I do wrong? Please help me.\r
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Algebra.Com's Answer #592269 by josgarithmetic(39617)![]() ![]() ![]() You can put this solution on YOUR website! Each term has a factor of 3: \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "There are only so few ways to factorize \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Look at the possible result for terms of x:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(5 2)(1 2)----------10 and 2, maybe.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(5 4)(1 1)---------5 and 4, NO.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(5 4 )(1 1)----------5 and 4, NO.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Look further at this: \n" ); document.write( "You need \n" ); document.write( "...... \n" ); document.write( "This is what works: \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Your originally given expression also contained a factor of 3, so to finish your factorization of that, you have \n" ); document.write( " |