Question

Fill (a+b) ^2 +.......... = 2(a^2+b^2)​

Answer 1

Step-by-step explanation:

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

Answer 2

Answer:

when you show that the right side of the equation is equal to the left side, by expanding it out and then factorising :

Step-by-step explanation:

(a+b)²+(a-b)²

=(a+b)(a+b)+(a-b)(a-b)

=(a²+ab+ab+b²)+(a²-ab-ab+b²)

=a²+2ab+b²+a²-2ab+b²

=2a²+2b²

=2(a²+b²)

therefore, it is shown that

2(a²+b²)=(a+b)²+(a-b)²