cbrt(27)
cbrt(-27)
cbrt(4096)
cbrt(-4096)
root(0, 3)
root(0, 4)
root(0, 5)
root(0.0000000000000, 3)
root(0.0000000000000, 4)
root(0.0000000000000, 5)
root(16, 4)
root(3125, 5)
root(-3125, 5)
