Adding, subtracting multiplying complex number- recovery

• 10
• -10
• 10i
• -10i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

CCSS.HSN.CN.B.4

(3 + 2i) + (4 - 5i)

• 7 + 7i

• 1 - 3i

• 1 - 7i

• 7 - 3i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

(4 - 2i) - (3 + 6i)

• 7 - 4i

• 1 + 4i

• 1 - 8i

• 7 - 8i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

What does i² equal?

• -1

• √-1

• 1

• -√1

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

(3 + 8i)(-2 - i)

• 2-19i

• 23-i

• 34+5i

• 23-i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

(-5 + 10i)(-5 - 10i) = 125

• True

• False

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2

Choose the correct answer for the operation pictured.

• 7-13i
• 7-i
• 1-13i
• 1-i

Tags

CCSS.HSN.CN.A.1

CCSS.HSN.CN.A.2