2) 3) 4) 5) Complex Numbers: If and are real numbers, then any number of the form: a b is called a complex number. is the real part and is the imaginary part. a +bi a b Since is a square root, all operations follow the same rules used for simplifying i radical expressions. Add: 1) (4 + 5i) + (7 + 3i) 2) (-2 + i) + (5 7i) – Subtract: 3) (6 + 5i) (8 + 11i) – 4) [(4 2i) (3 + 5i)] (2 + i) – – – Multiply: 4) 4i(2 + 3i) 5) (2 + i)(3 + 2i) 6) (4 + 6i)(3 2i) – 7) (3 + 2i)(3 2i) – Divide: For quotients use the to clear from the denominator i ‘complex conjugate’ and write your answer in the form a + bi 8) 9)
2) 3) 4) 5) Complex Numbers: If a and b are real numbers, then any number of the form: a +bi is called a complex number. a is the real part and b is the imaginary part. Since i is a square root, all operations follow the same rules used for simplifying radical expressions. Add: 1) (4 + 5i) + (7 + 3i) 2) (-2 + i) + (5 – 7i) Subtract: 3) (6 + 5i) – (8 + 11i) 4) [(4 – 2i) – (3 + 5i)] – (2 + i) Multiply: 4) 4i(2 + 3i) 5) (2 + i)(3 + 2i) 6) (4 + 6i)(3 – 2i) 7) (3 + 2i)(3 – 2i) Divide: For quotients use the ‘complex conjugate’ to clear i from the denominator and write your answer in the form a + bi 8) 9)