Solving Quadratic Equations By Factoring

Which of the following does NOT belong to the group?

• vertex
• x-intercept
• zero of a function
• root

Factor completely: 3x² - 9x

• 3x(x - 3)
• (x + 3) (3x - 3)
• (x)(3x - 9)
• (3)(x² - 3)

Factor x² - 11x + 18.

• (x - 6)(x - 3)
• (x - 9)(x - 2)
• (x - 5)(x - 6)
• not factorable

Factor 4m² - 49

• 2m(2m - 7)
• (2m - 7)(2m + 7)
• 4(m - 7)(m +7)
• not factorable

Factor x² - 12x - 32.

• (x + 8)(x - 4)
• (x - 4)(x + 8)
• (x - 16)(x + 2)
• not factorable

Factor 4x² - 5x - 6.

• (x + 2)(4x - 3)
• (x - 3)(4x + 2)
• (x - 2)(4x + 3)
• not factorable

Use the Zero-Product Property.
(x+3)(x-2) = 0

• x = 2 or x = -1
• x = 3 or x = -2
• x - -2 or x = 1
• x = -3 or x = 2

Solve by factoring.
b² + 2b - 24 = 0

• x = 6 or x = -4
• x = -6 or x = -4
• x = 6 or x = 4
• x = -6 or x = 4

Tags

CCSS.HSA-REI.B.4B

Solve by factoring.
c² - 4c = 0

• c = 0 or c = -4
• c = 0 or c = 2
• c = 0 or c = 4
• c = 1 or c = -2

Solve.  3x² = 27x

• x = 3,    x = -3
• x = 0,    x = 9
• x = -27
• x = 0,    x = 3