untitled

What does i² = ?

• -1
• √-1
• 1
• -√1

Tags

CCSS.HSN.CN.A.1

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Tags

CCSS.HSN.CN.A.2

(7 - 5i)(7 + 5i)

• 74
• 24
• 49 - 25i
• 49 + 25i

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CCSS.HSN.CN.C.8

What is the simplified form of (-9 + 5i) + (3 -2i)

• -12 + 31i

• -6 + 3i

• -11 + 7i

• 5 - 3i

Tags

CCSS.HSN.CN.A.2

(10-6i) - (2+3i)

• 12 + 3i
• 8 - 3i
• 8 - 9i
• -9i + 8

Tags

CCSS.HSN.CN.A.2

Simplify
3i - (4 + 7i)

• -4 + 10i
• 21 - 12i
• 4 - 10i
• -4 - 4i

Tags

CCSS.HSN.CN.A.2

Multiply
3i(-2 + 4i)

• -6+12i
• -12-6i
• -2+7i
• 12+6i

Tags

CCSS.HSN.CN.A.2

What is the conjugate of
7-2i? 

• 7+2i
• 7-2i
• 2-7i
• 2+7i

Tags

CCSS.HSN.CN.A.3

• A
• B
• C
• D

Tags

CCSS.HSN.CN.A.3

Tags

CCSS.HSN.CN.A.2