Question

(iv) x2 – 2x + k = 0, k ER
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Answer 1

Answer:

x2 – 2x + k = 0

Comparing equation with ax2 + bx + c = 0

a = 1, b = -2, cuk

Since the equation has 2 equal roots,

D = 0

b2 - 4ac = 0

Putting values

(-2)2 – 4 x 1 x k = 0

4 - 4k = 0

4 = 4k

4k = 4

k = 4

k = 1