Question

(a+b+c) ^2 - (a-b-c) ^2​

Answer 1

Step-by-step explanation:

Apply the formula  a  

2

−b  

2

=(a+b)(a−b)  to simplify the given expression.

(a+b+c)  

2

−(a−b+c)  

2

 

=(a+b+c+a−b+c){a+b+c−(a−b+c)}

=(2a+2c)(a+b+c−a+b−c)

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

=4ab+4bc