Question

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

SIMPLIFY ​

Answer 1

Answer:

(a+b+c)^2 = a² + b² + c² + 2ab +2bc+2ca

Step-by-step explanation:

Or a²+b²+c²+2(ab+bc+ca)

(a-b-c)^2 = a²+b²+c²-2ab+2bc-2ac