Mathematics 9 Quiz

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

• 4

• -4

• 16

• 0

The quadratic equation x² + 6x + 9 = 0 has how many real roots?

• 2

• 1

• 0

• Infinite

What is the discriminant of the equation x² - 5x + 6 = 0?

• 25

• 1

• 9

• 16

Which of the following describes the relationship between the coefficients and roots of a quadratic equation?

• Sum of the roots = -b/a

• Product of the roots = -b/a

• Sum of the roots = a/b

• Product of the roots = b/c

If the quadratic equation is x² - 5x + 6 = 0, what is the sum of its roots?

• -5

• 5

• 6

• -6

The equation 2x² + 3x - 5 = 0 is a quadratic equation. Which of the following is the correct form of this equation?

• ax² + bx + c = 0

• ax + b = 0

• x² + bx = 0

• a(x + b) = 0

Solve for x in the quadratic equation: x² + 4x + 3 = 0.

• x = -3, -1

• x = 1, -3

• x = -4, 3

• x = 3, -1

What is the first step in solving the equation x² - 6x = 0?

• Factor the equation

• Use the quadratic formula

• Add 6 to both sides

• Simplify the equation

What is the root of the quadratic equation x² - 9 = 0?

• x = ±3

• x = 9

• x = -9

• x = 3

Solve the quadratic equation: 3x² = 12.

• x = ±2

• x = ±3

• x = ±4

• x = ±1