Question

Algebraic Expressions and Identities : Expand the following: (a-b-c)^2​

Answer 1

Answer:

(a-b-c)^2 = a^2+b^2+c^2 -2ab+2bc-2ca

Answer 2

Answer:

(a-b-c)² = [(a) +(-b) +(-c) ]²

= (a)² + (-b)² + (-c)²+2*a*(-b) +2*(-b) *(-c)+2*a*(-c)

=a²+b²+c²-2ab+2bc-2ac