Algebra 2 - 4.2: Factoring Review

Factor:
x² + 7x - 30

• (x + 10)(x - 7)
• (x - 10)(x + 3)
• (x + 10)(x + 3)
• (x + 10)(x - 3)

Factor
n² + 5n - 6

• (n - 2)(n - 3)
• (n - 1)(n + 6)
• (n + 1)(n - 6)
• (n + 2)(n - 3)

What is the GCF of the trinomial?
3x² - 9x -120

• 3
• 2
• 6
• 9

Factor completely: 
3x² + 18x +15
Hint: Factor GCF first.

• 3(x² + 6x + 5)
• (x + 5)(x + 1)
• 3(x + 5)(x + 1)
• Prime

3x² + 23x – 8

• (3x + 1)(x – 8)

• (3x – 8)(x + 1)

• (3x – 1)(x + 8)

• (3x – 1)(x – 8)

6x² – 16x + 8

• (6x – 2)(x – 4)

• 2(3x + 2)(x + 2)

• 2(3x – 2)(x – 2)

• 3(3x + 2)(x – 2)

Which shows 3x² – 8x + 4 completely factored?

• (3x – 2)(x + 2)

• (3x + 4)(x – 1)

• (x + 4)(3x – 1)

• (3x – 2)(x – 2)

What is another way to say "where a function crosses the x-axis"?

• x-intercept

• zero

• root

• all of these.

Tags

CCSS.HSF-IF.C.7C

Find the roots/zeros of x² + x - 2

• -1, 2
• -2, 1

Tags

CCSS.HSA-REI.B.4B

Find the roots/zeros of x² + 4x - 21

• -7, 3
• -3, 7

Tags

CCSS.HSA-REI.B.4B