MCR 5-6 # 3 roots of a quadratic

What are the roots of the function
f(x)= (x - 2)(x + 3)?

• x = - 2 or x = 3
• x = 2 or x = -3
• The are no real roots
• x = 2 or x = 3

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

Solve the equation.

13) (x - 2)(x + 3) = 0

• -2, 3

• 2, 3

• 2, -3

• 2, -3, 0

Solve the equation. (8x - 2)(x + 1) = 0

• 4, 1

• 1/4, -1

• 4, -1

• 4, 0

Solve the equation. (x + 1)(x - 2) = 0

• 1,2

• 1,-2

• -1,2

• -1,-2

Solve the equation. (x + 5)(x - 3)(x - 11) = 0

• 5, 3, 11

• -5, 3, -11

• 0, -5, 3

• -5, 3, 11

Solve the equation. (x + 8)(x - 2)(x - 4) = 0

• 8, 2, 4

• -8, 2, 4

• 8, -4, 11

• -5, 3, 11

Solve the equation. (x - 1)(x - 2) = 0

• 1,2

• 1,-2

• -1,2

• -1,-2

Find the roots of the quadratic

x² + 2x - 24 = 0

• x = -6, x = 4

• x = 6, x = -4

• x = 12, x = -2

• x = 8, x = -3

Find the roots of the quadratic.

z² - 6z - 27 = 0

• z = 3 or z = 9

• z = 3 or z = -9

• z = -3 or z = 9

• z = -3 or z = -9

What are the roots of y = x² - 3x - 10

• -5, 2

• -5, -2

• 5, -2

• 5, 2