If the equation x2-2(k+1)x+(9/2)k=0 has two identical roots then the values of k are:
k=1, 2
k=2 or 1/2
k=3, 1/2
none of these
Additional Questions
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The number which should be subtracted from 5a2-3ab+7b2 to make it equal to a2+ab+b2, is: |
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If x = (1/2) (2p+2q-r), y = (1/3) (-p-2q+3r) and z=(1/5) (3p-4r+5q), then the value of 2x-3y-5z is: |
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The roots of the quadratic equation 6x2-5x+1=0 are: |
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Factors of 6a2-25a+4 are: |
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If r = at2 and s = 2at, the relation among s, r and a is: |
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If a+b=6, ab=5, the value of a-b is: |
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