4. Multiply

5. Simplify

6. Write the expression as a complex number

7. You Try You Try

8. Complex Conjugates These are used to rationalize a denominator. Imaginary numbers are NOT allowed in the denominator. What is the conjugate? (4+3i) (7+12i) (-3-4i) (-5+8i)

9. Write each expression as a complex number in standard form

10. Simplify

11. Simplify

12. You Try You Try

13. Solving for real numbers *Set real number to real number *Set imaginary number to imaginary number. X + Yi = -2 + 3i 3X + Yi = -9 – 7i

14. Your Turn Your Turn -2X – 12Yi = 30 – 8i 3X – 4Yi = -21 – 42i