Photos 3Х 9 4Х

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3х 9 4х. Х+5/Х-2-5/Х-5= Х-20/ Х-5 Х-2. Х/х2-у2 1/5х+5у. 17х-6-5х2 0. 8х+5,9=7х+20.
Х+5/Х-2-5/Х-5= Х-20/ Х-5 Х-2. Х/х2-у2 1/5х+5у. 17х-6-5х2 0. 8х+5,9=7х+20.

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