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katrinaa2
@katrinaa2
July 2022
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Найдите y из пропорции , найдите значение выражения
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kratgv
Verified answer
У=(7,5·2):1/3=15·3=45 ответ2)
(4х²+4ху)/(х²-у²)=4х(х+у)/(х-у)(х+у)=4х/(х-у)
при х=3/4, у=-1/4
4х/(х-у)=(4·3/4):(3/4+1/4)=3:1=3
Ответ 1)
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Answers & Comments
Verified answer
У=(7,5·2):1/3=15·3=45 ответ2)(4х²+4ху)/(х²-у²)=4х(х+у)/(х-у)(х+у)=4х/(х-у)
при х=3/4, у=-1/4
4х/(х-у)=(4·3/4):(3/4+1/4)=3:1=3
Ответ 1)