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annyspace1
@annyspace1
July 2022
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Народ!Срочно помогите!!6x/x2-y2 - 3/x-y при x= -2/3 y= 3/4.
Заранее спасибо
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ВикаВикторовна
Verified answer
= 6х-3(х+у) / (х-у)(х+у) = 6х-3х-3у / (х-у)(х+у) = 3х-3у / (х-у)(х+у) =
= 3(х-у) / (х-у)(х+у) = 3 / х+у = 3 / (-2/3+3/4) = 3 / (-8/12+9/12) =
= 3 / 1/12 = 3*12 = 36
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samodina
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Answers & Comments
Verified answer
= 6х-3(х+у) / (х-у)(х+у) = 6х-3х-3у / (х-у)(х+у) = 3х-3у / (х-у)(х+у) == 3(х-у) / (х-у)(х+у) = 3 / х+у = 3 / (-2/3+3/4) = 3 / (-8/12+9/12) =
= 3 / 1/12 = 3*12 = 36