найдите значение выражения (x²/x²-9xy):(x/x²-81y²) при x=7+9√7, y=9-√7. Created by nikitinaolga74. algebra-ru

x²-81y²) при x=7+9√7, y=9-√7...

nikitinaolga74 @nikitinaolga74

July 2022 1 6 Report

найдите значение выражения (x²/x²-9xy):(x/x²-81y²) при x=7+9√7, y=9-√7

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$\frac{ x^{2} }{ x^{2} -9xy}: \frac{x}{ x^{2} -81 y^{2} } = \frac{ x^{2} }{x(x-9y)}* \frac{(x-9y)(x+9y)}{x}=x+9y\\\\7+9 \sqrt{7}+9*(9- \sqrt{7} )=7+9 \sqrt{7}+81-9 \sqrt{7} =88$

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a1 pri a22841d5ec75d6623653e10dd07e174420 22469

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nikitinaolga74 October 2021 | 0 Ответы

nazovite bukvu poyavivshuyusya v konce xviii veka no oficialno utverdivshuyusya tol

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nikitinaolga74 September 2021 | 0 Ответы

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a1 pri a22841d5ec75d6623653e10dd07e174420 22469

nazovite bukvu poyavivshuyusya v konce xviii veka no oficialno utverdivshuyusya tol

perevedite tekst pomogite est u nih kroliki da u nih 2 krolika i 4 zol

6...

kak desyatichnuyu drob perevesti v obyknovennuyu i obratno

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