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What will be the value of k so that the quadratic equation kx2 – 4x…

What will be the value of k so that the quadratic equation kx2 – 4x + 1 = 0 has two equal roots?
  • A.
    2
  • B.
    3
  • C.
    4
  • D.
    8
  • E.
    (frac{1}{4})
Correct Answer: Option C
Explanation

kx2 – 4x + 1 = 0, comparing with ax2 + bx + c = 0
a = k, b = -4, c = 1 for equal root b2 = 4ac
(-4)2 = 4k
k = (frac{16}{4})
= 4