Question

please send answers fast. i will make you Brainiest and you will get 100 points.​

Answer 1

Step-by-step explanation:

$a = 1 \: and \: b = - 1 \\ (a + b)(a - b) \\ = (1 + ( - 1))(1 - ( - 1)) \\ =( 1 - 1)(1 + 1) \\ = 0(2) \\ = 0 \times 2 \\ = 0$

0 is the correct answer.