Complex Numbers

Find all solutions to each equation, real or imaginary.

x²=-36

• 6,-6

• 6

• -6

• 6i, -6i

Write the expression in the form of a+bi, where a and b are real numbers.

3 ⋅ √-25

• 15

• -15

• 15i

• -15i

Tags

CCSS.HSN.CN.A.1

Simplify.

(9 +21i) + (-7 - 15i)

• 2+6i

• -2-6i

• 16+36i

• -16-36i

Tags

CCSS.HSN.CN.A.2

Lisa wants to buy two new dresses from the mall. If one dress costs (59 - 6i) and the other costs (34 + 17i), how much money will she need to bring to the mall?

• 82 dollars

• 93 + 11i dollars

• 93 - 23i dollars

• 25 - 23i dollars

Tags

CCSS.HSN.CN.A.2

Tags

CCSS.HSN.CN.C.8

Tags

CCSS.HSN.CN.A.2

i⁷⁹

• i

• 1

• -1

• -i

Tags

CCSS.HSN.CN.A.2

3+√-4

• 1

• 3-2i

• 5

• 3+2i

Tags

CCSS.HSN.CN.A.1

Write the expression in the form of a+bi, where a and b are real numbers.

-3i ⋅ 2i

• -6

• 6

• -6i

• 6i

Tags

CCSS.HSN.CN.A.2

Simplify.

(-6 - 4i) + (1 + 4i) = _______

• -5

• -5+i

• -7-8i

• 5

Tags

CCSS.HSN.CN.A.2