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What is the conjugate of -2+5i?

• -5+2i
• -2-5i
• 2+5i
• 5-2i

What complex number is represented by the graph?

• -3-i
• -3+i
• 1+3i
• 1-3i

If z=√2+√2 i then arg(z²)=

• 0^o
• 60^o
• 90^o
• Not Possible

Simplify: 
(7 + 2i)(9 - 6i)

• 75-24i
• 63 - 24i  - 12i²
• 51 - 24i
• 58 + 60i

What does i² = ?

• -1
• √-1
• 1
• -√1

Simplify
2i - 7i + 10

• -5i+10
• 5i
• 9i+10
• 5i+10

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

• -2+6i
• 12+6i
• -35-16i²
• -35 -16i

Multiply
(2i)(3i)

• 5i
• -5
• 6i
• -6

Multiply: 
(4 – 3i)(7 + 2i)

• A.  22 - 13i
• B.  28 - 19i
• C.  34 - 13i
• D.  -34 - 29i

What is the simplified form of (8 -3i)²?

• 73

• 16 - 6i

• 55 + 48i

• 55 - 48i