Maths ques.frm quadratic eq.
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Maths ques.frm quadratic eq
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Answer:
k = 0, k = 3
Step-by-step explanation:
Given,
W.K.T:
D = b^2 - 4ac = 0
D = (4k)^2 - 4(3k)(4) = 0
16k^2 - 16(3k) = 0
16k^2 - 16(3k) = 0
k^2 - 3k = 0
k(k - 3) = 0
» k = 0, k =3
Verification:
9x^2 - 12x + 4 = 0
(9x-6)(9x-6) = 0
x = 2/3, 2/3 (real and equal roots)