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1. Which of the following is a quadratic equation? (n55)
(A)
(B) x (x + 5) = 2
(C) n – 1 = 2n
(D)
Ans.: (B) x (x + 5) = 2
2.Which of the following is not a quadratic equation? (n55)
(B)
(C)
Ans.
3. Which of the following is the value of k if root of equatio are real and equal? (n55)
Ans.: (C)