R d sharma solutions mathematics class 10 Solutions for Chapter 7 quadratic equations

Which of the following are quadratic equations?

x² + 1/x² = 5

Which of the following are quadratic equations?

x – 3/x = x²

Which of the following are quadratic equations?

√3x² – 2x + 1/2 = 0

Which of the following are quadratic equations?

2x² – √(3x) + 9 = 0

Which of the following are quadratic equations?

x² – 2x – √x – 5 = 0

Which of the following are quadratic equations?

3x² – 5x + 9 = x² – 7x + 3

Which of the following are quadratic equations?

x + 1/x = 1

Which of the following are quadratic equations?

x² – 3x = 0

Which of the following are quadratic equations?

(x + 1/x)² = 3(x + 1/x) + 4

Which of the following are quadratic equations?

(2x + 1)(3x + 2) = 6(x – 1)(x – 2)

Which of the following are quadratic equations?

x + 1/x = x², x ≠ 0

Which of the following are quadratic equations?

16x² – 3 = (2x + 5)(5x – 3)

Which of the following are quadratic equations?

(x + 2)³ = x³ – 4

Which of the following are quadratic equations?

x(x + 1) + 8 = (x + 2)(x – 2)

In each of the following, determine whether the given values are solutions of the given equation or not:

x² – 3x + 2 = 0 , x = 2 , x = – 1

Which of the following are quadratic equations?

x² + 6x – 4 = 0

A statement of Assertion is followed by a statement of Reason is given. Choose the correct answer out of the following choices :

Assertion : (x – 5)³ = x³ – 48 is a quadratic equation.

Reason: All polynomials of degree n, when n is a whole number can be treated as a quadratic equation.