Question

Factor.

m4 - 36
a. (m2 - 18)(m2 - 18)
b. (m? + 6)(m2 - 6)
c. (m2 + 6)(m2 + 6)
d. (m2 + 18)(m2 - 18)

Answer 1

b. (m^2 + 6)(m^2 - 6)

Explanation:

m^4 - 36

m^2 ^2 -36

Replace m^2 with x

x^2 -36

This is the difference of squares

(x-6) (x+6)

Replace x with m^2

(m^2 -6) (m^2+6)