Question

Solve (a+b+c)^2+(a-b-c)^2 *

Answer 1

$(a + b + c)^{2} + (a - b - c){2} \\ = (a + b + c + a - b - c){a + b + c - (a - b - c)} \\ = (2a)(a + b + c - a + b + c) \\ = (2a)(2b + 2c) \\ = 4ab + 4ac$