document.write( "Question 384176: Solve by factoring and using the principle of zero products:
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document.write( "2x^2-11x+15=0 OK I done this before but with the quadratic and square rooting I'm lost I done this much so far Please help I'm so lost with this \r
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document.write( "2(x-2)(x+2)-11+15 then add 11 on both sides which would be 2x2=4 and 15+11 =4 -11+11=0\r
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document.write( "this is my third sending!! hopefully i get some help \n" );
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Algebra.Com's Answer #271945 by scott8148(6628)![]() ![]() You can put this solution on YOUR website! you have to FOIL two binomial factors to get 2x^2-11x+15\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so the x terms of the binomials multiply to 2x^2 ___ like 2x and x\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the constant terms multiply to 15 ___ 3 & 5 , and 1 & 15 are the choices\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "look at the center (x) term coefficient ___ it is negative \n" ); document.write( "this means that the factors of 15 must be negative ___ -3 & -5 , and -1 & -15\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "now the \"tricky\" part ___ the factors of the squared term (2x^2) \n" ); document.write( "are multiplied with the factors of the constant term (15) \n" ); document.write( "to end up with the coefficient of the x term (-11) \n" ); document.write( "you have to mix & match to get the right combination\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2x * -3 = -6x \n" ); document.write( "x * -5 = -5x \n" ); document.write( "-5x + -6x = -11x\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so the factors are ___ (2x - 5)(x - 3) = 0\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2x - 5 = 0 ___ 2x = 5 ___ x = 5/2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x - 3 = 0 ___ x = 3 \n" ); document.write( " |