document.write( "Question 604839: Hi,
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document.write( "would you pls, explain to me, how 2 do this: \r
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document.write( "Solve for x : 2x^2 – 5x = 12
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document.write( "I started like this : 2x^2 – 5x -12 = 0 but lost it after ...
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document.write( "Thanks a lot. \n" );
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Algebra.Com's Answer #381450 by alicealc(293)![]() ![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "Find 2 numbers a and b so that \n" ); document.write( "a*b = 2*(-12) =-24 \n" ); document.write( "and \n" ); document.write( "a+b = -5 \n" ); document.write( "the numbers are -8 and 3 \n" ); document.write( "-8 is divisible by 2 -> -8/2 = -4\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "2x^2 can be separated as 2x*x\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "so, the factorization will be: \n" ); document.write( "(2x + 3)(x - 4)=0 \n" ); document.write( "2x + 3 = 0 or x - 4 = 0 \n" ); document.write( "2x = -3 or x = 4 \n" ); document.write( "x = -3/2 or x = 4 \n" ); document.write( " \n" ); document.write( " |