3-9 Imaginary Numbers Objective: Classify numbers into sets. Combine like terms with radicals. Introduce and learn to use and simplify and solve equations using imaginary numbers.
CComplex RReal Q or IIrrational QRational ZIntegers W Whole NNatural
Combining Like Terms with Radicals
Definition of i
Simplify r1 r2 r3 r0
Simplify r1 r2 r3 r0
is imaginary using
Simplify
Any number in the form of a + bi is a complex number. (real) (pure imaginary) (complex)
Simplify (8 – 5i) + (2 + i) (4 + 7i) – (2 + 3i)
Simplify (4 + 2i)(3 – 5i)
Solve. x 2 + 4x + 5 = 0