g9 complex numbers

What is i?

• 1

• -1

• √-1

• √1

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

• 10 - i

• 10 + 5i

• 6 + 5i

• 6 - i

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

• 22 - 28i

• 6 + 5i

• 6 - i

• 10 + i

What is the conjugate of 5 - 2i?

• 5 + 2i

• -5 - 2i

• 5 - 2i

• -5 + 2i

How do you write a complex number?

• a-bi

• a+bi

• ai+b

• ai-b

What letter represents an imaginary number?

• a

• i

• j

• x

What is the "real part" of this complex number:

 $8\ +\ 2i$  

• 8

• 2i

What is the "imaginary part" of this complex number:

 $8\ +\ 2i$  

• 8

• 2i

What is the "imaginary part" of this complex number:

 $–14–5i$  

• -14

• -5i

• 14

• 5i

What is the "real part" of this complex number:

 $–14\ –\ 5i$  

• -14

• -5i

• 14

• 5i