Question

The equation x^2 + (k + 2)x + 2k = 0 has two equal
roots then the value of k is:
​

Answer 1

Answer:

Correct option is

C

−

2

1

The equation x

2

−2(k+1)x+k

2

=0 will have equal roots when D=0,

D=b

2

−4ac,

⟹2(k+1)

2

−4(1)(k)

2

=(k+1)

2

−k

2

∴⟹2k+1=0

k=−1/2

Step-by-step explanation:

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