Answer :

The answer is (x/9+y/10)(x/9-y/10)
Steps:

${teks-lihat-gambar} sarahest2003
altavistard
This expression is the difference of two squares.

It can be rewritten as (x/9)^2 - (y/10)^2.

The factors are     [(x/9) - (y/10)] [(x/9) + (y/10)].

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