Question

How do you find the zeroes of `P(x)=x^6-729`?

Answer 1

You may not see it right away, but `729=3^6`
(I recommend you allways look for something like this)

Explanation:

Since the exponent (6) is even it is also possible that `729=(-3)^6`

So the question turns into:

`x^6=3^6orx^6=(-3)^6->x=3orx=-3`