Quadratic Equations Q1 — Class 10 Maths Solution

Maths Quadratic Equations Hard

Which of the following is a quadratic equation? (A)

x^{2} + 2 x + 1 = (4 - x)^{2} + 3

(B)

- 2 x^{2} = (5 - x) (2 x - \frac{2}{5})

(C)

(k + 1) x^{2} + \frac{3}{2} x = 7

, where

k = - 1

(D)

x^{3} - x^{2} = (x - 1)^{3}

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