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emilka6204
@emilka6204
July 2022
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Сроооооооочнааааа!!!1!1!!1!!1!1
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цапень
1,а =2/9pq
b = (х-5у)(х+5у) / 2(х-5у) = (х+5у) /2
2.= 12+3(х-2) / (х+2)(х-2) = 3(х+2) /(х+2)(х-2) =3/х-2 = 3 / (3002-2) = 1/100 или 0,1
3. (4а^2 - в^2 /2ab^2) :((2а+в) /2ав) = (2а-в)(2а+в)*2ав / 2ab^2*(2а+в) =
(2а-в) / в
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Thanks 1
цапень
4. 3х(х+3) - х(х+15) -2(х^2-9) / х*(х^2-9) = 3х^2+9х-х^2-15х-2х^2+18 /
цапень
/ х*(х^2-9) = (-6х+18) /х*(х^2-9) = -3(х-3) /х (х+3)(х-3) = -3 /х (х+3)
цапень
5. = (х+2)(х+3) - (х-2)(х-3) +2х^2-10х-18 / (х^2-9) = х^2+3х+2х+6-х^2+3х+2х-6+2х^2-10х-18 /(х^2-9)= 2(х^2-9) /(х^2-9) = 2
цапень
При х=3 или = -3в знаменателе получается 0. а, значит, все верно.
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Answers & Comments
b = (х-5у)(х+5у) / 2(х-5у) = (х+5у) /2
2.= 12+3(х-2) / (х+2)(х-2) = 3(х+2) /(х+2)(х-2) =3/х-2 = 3 / (3002-2) = 1/100 или 0,1
3. (4а^2 - в^2 /2ab^2) :((2а+в) /2ав) = (2а-в)(2а+в)*2ав / 2ab^2*(2а+в) =
(2а-в) / в