Factoring Quadratics

What is the greatest common factor of 12x^2 - 8x?

• 6x

• 2x

• 4x

• 10x

Factor the expression: 16x^2 - 25 = (a)  

• (4x - 5)(4x + 5)
• (4x + 5)(4x - 5)
• (4x - 5)(4x - 5)
• (4x + 5)(4x + 5)

Factor the perfect square trinomial: x^2 + 6x + 9

• (x + 1)(x + 9)

• (x + 3)^2

• (x + 2)(x + 4)

• (x + 3)(x + 3)

Factor the expression: 3x^2 + 9x + 6

• 3(x + 1)(x + 3)

• 3(x + 2)(x + 3)

• 3(x + 1)(x + 3)

• 3(x + 1)(x + 2)

Factor the special case: x^2 - 1

• (x + 1)(x - 1)

• (x - 2)(x + 1)

• (x + 1)(x + 1)

• (x + 1)(x + 2)

The greatest common factor of 18x^2 - 12x is _____.

Factor the expression: 9x^2 - 16

• (3x - 4)(3x - 4)

• (3x - 4)(3x + 4)

• (3x + 4)(3x + 4)

• (3x + 4)(3x - 4)

Factor the perfect square trinomial: x^2 - 10x + 25

• (x - 10)^2

• (x + 5)^2

• (x - 5)^2

• (x - 25)^2

Factor the expression: 4x^2 + 12x + 9 is (a)  

• 4x^2 + 12x - 9
• (2x + 3)^2
• (2x + 3)(2x + 3)
• 2x^2 + 6x + 9

Factor the special case: x^2 + 1

• (x + 3)(x - 3)

• (x + 2)(x - 2)

• (x + 1)(x - 1)

• (x + i)(x - i)