Question

(a+b)(a-b) - (a-2b)(a+2b)
​

Answer 1

Answer:

a^4+ 4b^4

Step-by-step explanation:

(a^2 -b^2) (a^2- 4b^2)

a^4+ 4b^4

Answer 2

2a^2 - 5b^2

Step-by-step explanation:

I had send image I hope it would be right