The value(s) of k for which the quadratic equation2x2 + kx +2 =0 has E

1.	The value(s) of k for which the quadratic equation2x2 + kx +2 =0 has Equal root, is(A)4 (B) +4 (C)4 (D)0
Answer» ANSWER: For equal ROOTS, DISCRIMINANT D of EQUATION 2x2+kx+k=0, should be zero. D=k2−4(2)(k)=0 k2−8k=0 k(k−8)=0 k=0,8

The value(s) of k for which the quadratic equation2x2 + kx +2 =0 has Equal root, is(A)4 (B) +4 (C)4 (D)0

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ANSWER:

For equal ROOTS, DISCRIMINANT D of EQUATION 2x2+kx+k=0, should be zero.

D=k2−4(2)(k)=0

k2−8k=0

k(k−8)=0

k=0,8

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The value(s) of k for which the quadratic equation2x2 + kx +2 =0 has Equal root, is(A)4 (B) +4 (C)4 (D)0​

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The value(s) of k for which the quadratic equation2x2 + kx +2 =0 has Equal root, is(A)4 (B) +4 (C)4 (D)0