Question

(a+b)^2+(a-b)^2
please give me right answer

Answer 1

(a+b)^2+(a-b) ^2

= a2+b2+2ab+a2+b2-2ab

= 2a2+2b2

= 2(a2+b2).

Answer 2

${a}^{2} + {b}^{2} + 2ab + {a}^{2} + {b}^{2} - 2ab \\ 2 {a}^{2} + 2 {b}^{2}$
this is the answer