Question

$a {2}^{} \: - b {2}^{ = } \\ (1) \: (a + b) {}^{2} \\ (2) \: (a - b) {}^{2} \\ (3) \: (a + b)(a - b) \\ (4) \: \: \: (a + b) {}^{2} + (a - b) {}^{2}$
please do it fast ​

Answer 1

Answer:

here is the answer:-

the correct option is B]..

Step-by-step explanation: