Question

If the quadratic equation x2

– 2x + k = 0 has equal roots, then value of k is ________​

Answer 1

Answer:

comparing with ax^2 + bx + c = 0,

a = 1, b = -2, c = k

D= b^2 - 4ac

For equation to have equal roots, D = 0

so,

4 - 4k = 0

k = 1

Answer 2

Answer:

k=1

Step-by-step explanation:

x^2-2x+k=0 is in the form ax^2+bc+c form

a=1,b=-2,c=k

b^2-4ac=0 (equal roots)

(-2)^2-4*1k=0

4-4k=0

4k=4

k=4/4

k=1

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