Units1-4 Review

It is not 5x + 6

It is not 6x² + 8 either. Draw your arrows.

• 6x²+12x+8

• 6x²+16x+8

• 6x²+16x+6

Factor x² + 8x - 20

• (x + 10)(x-2)

• (x + 4)(x + 5)

• (x - 10)(x + 2)

• (x + 10)(x + 2)

Factor Completely: 6x² + 5x - 6

Bottoms Up

• 6(x + 1)(x - 6)

• (6x + 6)(x - 1)

• (2x - 3)(3x + 2)

• (3x - 2)(2x + 3)

Factor: m² - 81

• (m + 9)(m + 9)

• (m - 9)(m - 9)

• (m + 9)(m - 9)

• (m + 9)²

(5-2i) + (-7+8i)

combine like terms

• -2+6i

• 12+6i

• -35-16i²

• -35 -16i

Multiply:

(4 – 3i)(-7 – 2i)

must do this:

4(-7 - 2i) AND -3i(-7 - 2i)

Hint: i² = -1

• A. -23 + 13i

• B. -23 - 29i

• C. -34 + 13i

• D. -34 - 29i

Simplify: 
(10+ 15i) - (48 - 30i)

• 58 - 45i
• 58 - 15i
• -38 - 15i
• -38 + 45i

Tags

CCSS.HSN.CN.A.2

Simplify  $i^{61}$ . 
even power --> 1 or -1
odd power --> i or -i

•  $i$  

•  $1$  

•  $-i$  

•  $-1$  

x²+4x-32=0

Factor first. Then solve (i.e. change signs)

• x = $-8$ and x = $4$

• x = $8$ and x = $-4$

• x = $-8$ and x = $-4$

Solve using the Quadratic Formula.

= 0 first

find a, b, and c. plug into formula

• A

• B

• C

• D