document.write( "Question 847229: Find the value of K so that the equation 3x2−6x+k=0\r
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document.write( "a)two real solutions.
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document.write( "b)two complex solutions.
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document.write( "c)one real(or two same) solution(s)\r
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document.write( "this is question in my homework. \n" );
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Algebra.Com's Answer #510293 by swincher4391(1107)![]() ![]() You can put this solution on YOUR website! a=3 b=-6 c = k\r \n" ); document.write( "\n" ); document.write( "Find b^2 -4ac:\r \n" ); document.write( "\n" ); document.write( "36 - 12k\r \n" ); document.write( "\n" ); document.write( "This is our discriminant. \r \n" ); document.write( "\n" ); document.write( "Now when D > 0 we have two real solutions\r \n" ); document.write( "\n" ); document.write( "36 -12k > 0\r \n" ); document.write( "\n" ); document.write( "-12k > -36\r \n" ); document.write( "\n" ); document.write( "k < 3\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "When D < 0 we have two complex solutions\r \n" ); document.write( "\n" ); document.write( "36- 12k < 0\r \n" ); document.write( "\n" ); document.write( "-12k < -36\r \n" ); document.write( "\n" ); document.write( "k > 3\r \n" ); document.write( "\n" ); document.write( "When D = 0 we have one real solution\r \n" ); document.write( "\n" ); document.write( "36-12k= 0\r \n" ); document.write( "\n" ); document.write( "36 = 12k\r \n" ); document.write( "\n" ); document.write( "k = 3 \n" ); document.write( " |