Question

Factorise 36 - p2 - q2 - 2pq​

Answer 1

factors are(p−q−r)(p−q+r)

Step-by-step explanation:

We need to factorise (p2−2pq+q2)−r2

We have (p2−2pq+q2)−r2=(p−q)2−r2

By using (a2−b2)=(a−b)(a+b)

Here a=(p−q),b=r

Therefore, (p2−2pq+q2)−r2=(p−q−r)(p−q+r)

Hence, factors are (p−q−r)(p−q+r)

Answer 2

Answer:

(6-p-q)(6+p+q)

Step-by-step explanation:

6^2-(P+Q)^2