Question

which identity can not be used in solving:

(x+y)^2 -(x - y)^2


(a+b)2

(a -b)2

a2 - b2

(x+a)(x+b)​

Answer 1

Answer:

Step-by-step explanation:

(x+a)(x+b)​    (x+y)^2 -(x - y)^2