Take this Quiz: Mathematics - Quadratic Equations | Zestly

Question 1

Which of the following expressions represents the discriminant $D$ for a general quadratic equation $ax^2 + bx + c = 0$?

Accepted Answer

$b^2 - 4ac$

Question 2

For the quadratic equation $x^2 - 5x + 6 = 0$, which of the following are the correct roots?

Accepted Answer

$x = 2$

Question 3

If a quadratic equation $ax^2 + bx + c = 0$ has roots $x_1$ and $x_2$, what are the expressions for their sum and product according to Vieta's formulas?

Accepted Answer

$x_1 + x_2 = -\frac{b}{a}$

Question 4

When completing the square for the expression $x^2 + 6x$, what constant must be added to create a perfect square trinomial?

Answer

3

Answer

6

Answer

9

Answer

36

Question 5

Which of the following conditions regarding the discriminant $D$ indicate that a quadratic equation has two distinct complex roots?

Answer

$D > 0$

Answer

$D = 0$

Answer

$D < 0$

Answer

$D \geq 0$