Quadratic Equations Quiz

It is a polynomial function of degree two that can be written in the form y = ax² + bx + c, where a, b, and c are real numbers and a≠0.

• linear equation

• quadratic function

• quadratic equation

• quadratic inequality

Which of the following is a quadratic equation?

• 2r² -. 4r -1

• 3t -7 = 2

• s² + 5s - 4 = 0

• 2x² -7x > 3

In the quadratic equation 7x² + 5x - 4 = 9, which is the quadratic term?

• -13

• 5x

• 7x²

• -4

What is the constant term of (𝑥 − 5) (2𝑥 + 3) = 7?

• 7

• -8

• -22

• -15

How many real roots does the quadratic equation x² + 7x + 6 = 0 have?

• 0

• 1

• 2

• 3

The roots of quadratic equation are 5 and -3. Which of the following quadratic equations has these roots?

• x² + 8x + 15 = 0

• x² - 8x + 15 = 0

• x² -2x - 15 = 0

• x² + 2x - 15 = 0

Which of the following values of x will make the equation x² + 7x -18 = 0 true?

I. -9 II. 2 III. 9

• I and II

• II and III

• I and III

• I, II, ad III

Which of the following quadratic equations is equivalent to 𝑥² + 9𝑥 = −8?

• (x + 1) (x + 8) = 0

• (x - 1) (x + 8) = 0

• (x -1) (x - 8) = 0

• (x+ 1) (x - 8) = 0

In the quadratic equation 3x² - 4x + 3 = -23, Which is the constant term?

• 25

• 26

• 27

• none of the choices

One of the roots of 2x²- 13x + 20 = 0 is 4. What is the other root?

• -2/5

• -5/2

• 2/5

• 5/2