Question

Which of the following is not equal to (a2 + b2)?
(a) (a + b)^ - 2ab
(b) (a - b)^ - 2ab
(c)1\2 {(a + b)^ – (a - b)^}
(d)1\2{(a + b)^ + (a - b)^}​

Answer 1

Annyeonghaseo Army ❤ Your Answer will be a.(a+b)^-2ab

I Purple you ❤

Answer 2

Answer:

b

Step-by-step explanation:

(a-b)^2-2ab. =( a^2 + b^2 -2ab) - 2ab

= a^2 + b^2-4ab

else all are equal to a^2 + b^2.