Question

(p-q) – (p+q) = _______________ ​

Answer 1

Answer:

p²-2pq+q²

Step-by-step explanation:

First, we will change the signs of 2 bracket because before of 2nd bracket there is '-' sign.

So, equation can be-

(p-q)-(p-q) (plus sign will change into minus)

Now we can solve by the II identity which is (a-b)²

(a-b)² because p-q is repeating 2 times.

So, (p-q)-(p-q)

Here, a=p and b=q

when we will solve (a-b)², then we will got the answer-

(a)²-2ab+(b)²

Now we can solve the question very easily-

(a)²-2ab+(b)²

= a×a-2×a×b+b×b

a=p and b=q

= p×p-2×p×q+q×q

= p²-2pq+q²

So, answer of this question is p²-2pq+q².