; Does operations on numbers like a calculator
5 (9 - 3) / 2

; Uses exact rational arithmetic
1/2 + 1/6

; Uses as many digits as necessary for exact arithmetic
5^99

; Press the Esc key, issue a Factor command, then a Transfer Demo command
54!

; Returns the principal root of square roots
SQRT 9

; Simplifies fractional powers
(2/27)^(2/3)

; Some of these simplifications are tricky
SQRT (4 - 2 * SQRT (3))
SQRT (5 + SQRT 24) + SQRT (5 - SQRT 24)

; i with a hat represents the imaginary SQRT(-1)
SQRT (-1)

; You can enter i-hat as #i and do complex arithmetic
(1 + 2 #i) (3 + #i)

; Complex denominators are automatically rationalized
(2 + #i) / (#i + 1)

; Fractional powers default to the principal root
(-8)^(1/3)

; Fractional powers of complex numbers are simplified
SQRT (55/36 + 4/3 #i)

; You can enter infinity as inf and combine it with itself or numbers
inf + inf + 5