Answer:
(m - n) (m + n) (m^2 + n^2)
Step-by-step explanation:
Factor the following:
m^4 - n^4
m^4 - n^4 = (m^2)^2 - (n^2)^2:
(m^2)^2 - (n^2)^2
Factor the difference of two squares. (m^2)^2 - (n^2)^2 = (m^2 - n^2) (m^2 + n^2):
(m^2 - n^2) (m^2 + n^2)
Factor the difference of two squares. m^2 - n^2 = (m - n) (m + n):
Answer: (m - n) (m + n) (m^2 + n^2)
