Question

Verify the identity - (a-b)2=a2 - 2ab + b2​

Answer 1

Answer:

We know that (a-b) ^2 =a^2 +b^2 - 2ab

Taking LHS

= ( a-b) ^2

We can write it

=( a-b) (a-b)

Multiply by two binomial then

a(a-b) - b(a-b)

=a^2 - ab-ab+b^2

Like it as

a^2 +b^2 - 2ab

So it be proved