Imaginary Numbers/Square Root Review

(2i)(3i)

• 5i
• -5
• 6i
• -6

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Simplify: 
(10 + 15i) - (48 - 30i)

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

i¹³

• -1
• 1
• i
• -i

(3i)(-2+4i)

• -6+12i
• -12-6i
• -2+7i
• 12+6i

Multiply: 
(4 – 3i)(-7 – 2i)

• A.  -23 + 13i
• B.  -23 - 29i
• C.  -34 + 13i
• D.  -34 - 29i

Simplify 4i(7 + 2i)

• 28 + 8i
• 28 + 8i
• 8 + 28i
• -8 + 28i

Tags

CCSS.HSA.APR.A.1

Simplify
(10 + 3i) - (12 - 7i)

• 22 - 4i
• -2 - 4i
• -2 - 10i
• -2 + 10i

What does i² = ?

• -1
• √-1
• 1
• -√1

Tags

CCSS.HSN.CN.A.1

Calculate: 
(1 − 2i) + (-4 + 2i)

• -3
• -3 − 4i
• 5 − 4i
• 5