Question

(a +b)² + (a-b) ² expansion chapter class 9​

Answer 1

Answer:

(a^2+ b^2 +2 ab)+ (a^2+ b^2 -2ab)

Step-by-step explanation:

Firstly we expand (a +b)² which is (a^2+ b^2 +2 ab)

then we expand (a-b) ² which is (a^2+ b^2 -2ab)

then as per the question

(a^2+ b^2 +2 ab)+ (a^2+ b^2 -2ab)

= 2a^2 + 2b^2 is the answer

- By J