Question

Expand : (p^2– q^2) =

Answer 1

Answer:

p^2+q^2-2pq

Step-by-step explanation:

step1=(p^2-q^2)=p^2+q^2-2pq

Answer 2

Answer:

(p+q) (p-q)

Step-by-step explanation:

as we know a² - b² = (a+b) (a- b)

so : (p^2– q^2) = (p+q) (p-q)