Diagnostic test NCR (RVWR)

Which of the following is NOT a quadratic equation.

• 2x + 3y = 6

• by completing the square

• by zero property

• by square root method

• by quadratic formula

What is the missing term in the trinomial x² + __ + 121 to make it a perfect square trinomial?

• 5x

• -11x

• 22x

• 11x

Which of the following is a quadratic formula?

Form the quadratic equation given the roots 8 and -3.

• x² + 5x – 24 = 0

• x² – 5x + 24 = 0

• x² + 5x + 24 = 0

• x² – 5x – 24 = 0

The quadratic equation x² + 2x + 5 = 0

• has 2 distinct real roots

• has exactly one real root

• has no real roots

• has roots 5 and 1

For what value of c the equation 4x² + 4x + c = 0 has one real root?

• 4

• 1

• 9

• -4

The roots of quadratic equation x² - 4x + 5 = 0 are

• 2+i and 2-i

• 5 and -1

• 5i and -i

• -2+i and -2-i

What is the value of the discriminant of the quadratic equation -x² + 4x – 2 = 0?

• 8

• -8

• -2

• 2

In the quadratic equation −5x² −32x+8=0, which is the constant term?

• -5x²

• -32x

• 8

• 0