Complex Numbers

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

• 7 + 7i

• 1 - 3i

• 1 - 7i

• 7 - 3i

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

• 7 - 4i

• 1 + 4i

• 1 - 8i

• 7 - 8i

What does i² equal?

• -1

• √-1

• 1

• -√1

What letter represents an imaginary number?

• a

• i

• j

• x

 $3+3i+8-2i-7$  

 $-3+6i-\left(-5-3i\right)-8i$  

 $4i\left(-2-8i\right)$  

 $-4i\cdot5i$  

 $5i\cdot i\cdot-2i$  

 $\left(2-4i\right)\left(-6+4i\right)$