Question

The roots of the equation 2x2

- 4x + k = 0 are equal ,then the value of k is.​

Answer 1

Step-by-step explanation:

roots are equal then D=0

so

b^2-4ac=0

(-4) ^2-4(2)(k)=0

16-8k=0

8k-16=0

so

k=2

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