2.4-2.6 review

Simplify:
√-108

• 3i√6
• 3i√20
• 6i√3
• 20i√3

√45

• 3√5
• 5√3
• 9√5
• 5√9

Simplify: 
(10+ 15i) - (48 - 30i)

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

(1-3i)(2+5i)

• 22-i
• 16-i
• 17-i

Find the sum.
(5-2i) + (-7+8i)

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

• 10
• -10
• 10i
• -10i

What does i² = ?

• -1
• √-1
• 1
• -√1

Simplify:
3√-81

• -27
• 3i√3
• 27i
• 9i

Solve the following equation by completing the square:
n² - 2n - 3 = 0

• {3 and-1}
• {4 and -4}
• {5 and -3}
• {8 and -7}

Solve by completing the square.
x² +12x = 5

• X = 6 + √41 or  6 − √41
• X= 35 or 47
• X = −6 + √41 or  −6 − √41
• X = √35 or √47