Quadratic Equations Quiz

If p(x) = 0 is a quadratic equation, then p(x) is a polynomial of degree:

• one

• two

• three

• four

Which of the following is a quadratic equation in x?

• x + 12 = 0

• 7x = 2x^2

• 2x^2 + 2x = 0

• 6 - x(x^2 + 2) = 0

Which of the following is a root of the equation 2x^2 - 5x - 3 = 0?

• x = 3

• x = 4

• x = 1

• x = -3

Which of the following is a root of the equation 3x^2 - 2x - 1 = 0?

• x = -1

• x = -2

• x = 1

• x = -1

2x = ? is a solution of the equation:

• 2x^2 - 4 = 0

• 2x^2 - 4 = 0

• 3x^2 + 5x + 2 = 0

• (a) and (b) both

Which of the following is a quadratic equation in x?

• 2x^2 + x = 0

• 2x^2 - 1 = 5x

• 2x^3 - 4x - 0 = 0

• 2x^2 + 7x + 5 = 0

For what value of k, x = 2 is a solution of kx^2 + 2x - 3 = 0?

• k = -1/2

• k = 1/2

• k = -1/4

• k = 1/4

Which of the following is a root of the equation 2x^2 - x + ?

• 1/4

• 1/3

• 1/2

• 4

If x = 2 is a root of the equation 3x^2 - 2kx + 5 = 0, then k is equal to:

• 4/17

• 17/4

• 1/17

• 1/4

Which of the following is a quadratic equation in x?

• 1/4x + x = 0

• 2x^2 + 2x = 0

• 2x + 3 = 0

• 2x^4 + 3x + 0 = 0