Question

(a-b)²=a²-2ab+b² please derrive it​

Answer 1

Answer:

To prove - (a-b)^2 = a^2+b^2-2ab

Proof-

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

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

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

=a^2-2ab+b^2

Hence proved