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Alekseikolesni1
@Alekseikolesni1
August 2021
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IrkaShevko
Verified answer
1 votes
Thanks 1
svetazuna
Verified answer
1)
28в⁶/с³ * с⁵/84в⁶ = с²*в⁶/3в⁶ = с²/3,
2)
14р⁴/q⁶ * q⁵/56р⁴ = 1/4q,
3)
30х²у : 72ху/z = 30х²у * z/72ху = 5хz/12,
4)
45а³в * с²/30а⁴в = 3с²/2а,
5)
(3х+6)/(х+3) * (х²-9)/(х²-4) =
= 3*(х+2)/(х+3) * (х-3)(х+3)/(х-2)(х+2) =
= 3*(х-3)/(х-2),
6)
(3а-9)/(а+2) : (а²-9)/(а²-4) =
= (3а-9)/(а+2) * (а²-4)/(а²-9) =
= 3*(а-3)/(а+2) : (а-3)(а+3)/(а-2(а+2) =
= 3*(а-2)/(а+3),
7)
(2а-в)/а * (а/(2а-в) + а/в)=
= (2а-в)/а * а/(2а-в) + (2а-в)/а * а/в =
= 1 + (2а-в)/в =
= в/в + (2а-в)/в =
= (в + 2а - в)/в =
= 2а/в,
8)
(3х+у)/у * (у/х - 3у/(3х+у) =
= (3х+у)/у * у/х - (3х+у)/у * 3у/(3х+у) =
= (3х+у)/у - (3ху+у²-3ху)/(3х+у)х =
= у²/ху = у/х
0 votes
Thanks 1
010ÃããÃ010
почему то ваш ответ не сходится с первым
IrkaShevko
да, 1, 3 и 8 у вас не верно
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Answers & Comments
Verified answer
Verified answer
1)28в⁶/с³ * с⁵/84в⁶ = с²*в⁶/3в⁶ = с²/3,
2)
14р⁴/q⁶ * q⁵/56р⁴ = 1/4q,
3)
30х²у : 72ху/z = 30х²у * z/72ху = 5хz/12,
4)
45а³в * с²/30а⁴в = 3с²/2а,
5)
(3х+6)/(х+3) * (х²-9)/(х²-4) =
= 3*(х+2)/(х+3) * (х-3)(х+3)/(х-2)(х+2) =
= 3*(х-3)/(х-2),
6)
(3а-9)/(а+2) : (а²-9)/(а²-4) =
= (3а-9)/(а+2) * (а²-4)/(а²-9) =
= 3*(а-3)/(а+2) : (а-3)(а+3)/(а-2(а+2) =
= 3*(а-2)/(а+3),
7)
(2а-в)/а * (а/(2а-в) + а/в)=
= (2а-в)/а * а/(2а-в) + (2а-в)/а * а/в =
= 1 + (2а-в)/в =
= в/в + (2а-в)/в =
= (в + 2а - в)/в =
= 2а/в,
8)
(3х+у)/у * (у/х - 3у/(3х+у) =
= (3х+у)/у * у/х - (3х+у)/у * 3у/(3х+у) =
= (3х+у)/у - (3ху+у²-3ху)/(3х+у)х =
= у²/ху = у/х