Question

pls give me a right answer... ​

Answer 1

Answer:

Step-by-step explanation:

•(a^2-b^2)^2

•[(a - b)(a+b)]^2

•( a - b)^2(a + b)^2

•(a^2+b^2-2ab)(a^2+b^2+2ab)

•a^4+a^2b^2+2a^3b+a^2b^2+b^4+2ab^3-2a^3b-2ab^3-4a^2b^2

•a^4+2a^2b^2+b^4-4a^2b^2

•a^4-2a^2b^2+b^4