Question

How is this possible:
*see attatched file

Answer 1

its true

Answer 2

Yes, but how do you write it as such ?

Answer 3

How would you go from the left side to the right side

Answer 4

let me see

Answer 5

damn i cant explain it to you its too much. :/

Answer 6

think of a^2-b^2=(a-b)(a+b)

Answer 7

your a=(x/y) and your b=1