Question

Simplify by using algebraic identities. (p+q)^2 - (p-q)^2.​

Answer 1

Answer:

4pq

Step-by-step explanation:

(p+q)^2 - (p-q)^2.

= (p² + 2pq + q²) - (p² - 2pq + q²)

= p² + 2pq + q² - p² + 2pq - q²

= 4pq

Answer 2

Answer:

4pq

Step-by-step explanation:

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

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

=>p^2 + 2pq + q^2 - p^2 + 2pq - q^2

=>2pq + 2pq

=>4pq