Question

factorise p^4-81q^4​

Answer 1

Answer:

(p - 3 q) (p + 3 q) (p^2 + 9 q^2)

Step-by-step explanation:

Answer 2

p^4-81q^4

=(p^2)^2-(9q^2)^2

=(p^2-9q^2)(p^2+9q^2)

=(p)^2-(3q)^2(p^2+9q^2)

=(p-3q)(p+3q)(p^2+9q^2) answer