Solving Imaginary Numbers

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

• -2+6i

• 12+6i

• -35-16i²

• -35 -16i

Tags

CCSS.HSN.CN.A.2

Simplify: 
(10+ 15i)-(48 - 30i)

• 58 - 45i

• 58 - 15i

• -38 - 15i

• -38 + 45i

Tags

CCSS.HSN.CN.A.2

Calculate (multiply):
 (4 + 3i)(4 − 3i)

• 16 − 9i²

• 25

• 7

• 8 − 6i

Tags

CCSS.HSN.CN.C.8

Calculate (multiply):
(1 − 2i)(6 + 5i)

• 16 − 7i

• -16 + 7i

• -16 − 7i

• 16 + 7i

Tags

CCSS.HSN.CN.A.2

Find the conjugate of:
5 + 7i

• 5 − 7i

• -5 − 7i

• -5 + 7i

Tags

CCSS.HSN.CN.A.3

Find the conjugate of:
-4 − 8i

• -4 + 8i

• 4 − 8i

• 4 + 8i

Tags

CCSS.HSN.CN.A.3

Calculate(Divide, multiply by conjugate):

• -3/4 − 1/4i

• 3/4 + 1/4i

• -3/4 + 1/4i

• 3/4 − 1/4i

Tags

CCSS.HSN.CN.A.3

What is the imaginary number in this number:

6+3i

• 6

• 3

• 3i

• 6+3i

Tags

CCSS.HSN.CN.A.1

Which is the real part in this number:

• 5

• 2

• 2i

• 5+2i

Tags

CCSS.HSN.CN.A.1

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

• 5i+2i

• 11+6i

• 11-4i

• 7i

Tags

CCSS.HSN.CN.A.2