Quadratic Equat...

Which of the following is a quadratic equation?

1. (x - 3)² = (x - 1)² + 2
2. (2x - 4)³ = 8x³
3. x⁴ - 3x² + 5x - 4 = 0
4. x² + x^1/2 - 1 = 0
5. (x - 1/x)² + 2 = 0

The discriminant of the quadratic equation 2x² - 6x - 3 = 0 is

The roots of the quadratic equation x² - (1/16) = 0 are

If the equation 6x² + 4x - a = 0 has equal roots, then choose the correct option.

Choose the quadratic equation with two real roots.

Choose the quadratic equation with roots 7 and -1.

Choose the equation with imaginary roots.

Choose the equation which has two distinct real roots.

The roots of the equation (x - 3)² = 4 are

If 5x² - kx - 4 = 0 has imaginary roots, then choose the correct option.

The roots of the quadratic equation (2x - 3)(x + 2) = 3x + 9 are

The root of which of the following quadratic equations is the reciprocal of the other root?

Choose the quadratic equation having roots 2/3 and -1/2.

If the quadratic equation 3x² - 12x + 4k = 0 has equal roots, then the value of k is

Choose the quadratic equation with real roots.