Real vs imaginary numbers

• Real #: root of a positive number (ex: ³√x)

• Imaginary number: root of a negative number (ex: ³√(–x)). An imaginary number is notated with the letter i after the number (Ex: 5i, 2i, -3i, i). Values of imaginary numbers include i = √-1, i² = -1, i³ = - √-1, i⁴ = 1

• Complex number: includes a real and imaginary number. It is in the form a + bi where a is the real number and bi is the imaginary number

Tips

• Group all real terms together & all imaginary terms together