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Sahay Sir > Question Answers > NCERT Class 10 > Maths > Chapter 4 - Quadratic Equations > Which of the following is a quadratic equation? (A) x^2 + 2x + 1 = (4 – x)^2 + 3 (B) -2x^2 = (5 – x) (2x – 2/5 ) (C) (k+ 1)x^2 + 3/2 x = 7,where k = -1 (D) x^3 – x^2= (x – 1 )^3

Which of the following is a quadratic equation? (A) x^2 + 2x + 1 = (4 – x)^2 + 3 (B) -2x^2 = (5 – x) (2x – 2/5 ) (C) (k+ 1)x^2 + 3/2 x = 7,where k = -1 (D) x^3 – x^2= (x – 1 )^3

where k = -1 (D) x^3 – x^2= (x – 1 )^3 Which of the following is a quadratic equation? (A) x^2 + 2x + 1 = (4 – x)^2 + 3 (B) -2x^2 = (5 – x) (2x – 2/5 ) (C) (k+ 1)x^2 + 3/2 x = 7