Question

Q1. Write the following identities in your copy.
1. (a+b) ²= a²+2ab+b²
2. (a-b) ²=a²-2ab+b²
3. (a+b) (a-b) =a²-b²
4. (a+x) (a+y) =a²+(x+y) a+xy

Answer 1

Step-by-step explanation:

(a+x) (a+y) = a² + ay + ax + xy

This one identity is wrong there.

Now it's ready to copy.