Question

Factor completely.
p^4-81

Answer 1

p^(4)-81

The binomial can be factored using the difference of squares formula, because both terms are perfect squares.
(p^(2)+9)(p^(2)-9)

The binomial can be factored using the difference of squares formula, because both terms are perfect squares. The difference of squares formula is a^(2)-b^(2)=(a-b)(a+b).
(p^(2)+9)(p-3)(p+3)