document.write( "Question 1023627: For what value of the constant k does the quadratic 2x^2 - 5x + k= 0 have a double root? \n" ); document.write( "

Algebra.Com's Answer #639117 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "For what value of the constant k does the quadratic 2x^2 - 5x + k= 0 have a double root?
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document.write( "Calculate the discriminant d =  = (-5)^2 - 4*2*k = 25 - 8k.\r\n" );
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document.write( "The double root will happen when the discriminant is zero: d = 0.\r\n" );
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document.write( "It gives k = .\r\n" );
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