Решите систему уравнений:[tex]\left \{ {{x-y=2 \atop {x^2-y^2=8}} \right.[/tex]. Created by SchoolMeat. algebra-ru

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July 2022 1 3 Report

Решите систему уравнений:
[tex]\left \{ {{x-y=2 \atop {x^2-y^2=8}} \right.[/tex]

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AntVa

$\left \{ {{x-y=2 \atop {x^2-y^2=8}} \right. \Leftrightarrow \left \{ {{x-y=2 \atop {(x-y)(x+y)=8}} \right. \Leftrightarrow 2(x+y)=8; \Leftrightarrow x+y=4;$

$\left \{ {{x=2+y \atop {x+y=4}} \right. \Leftrightarrow 2+y+y=4; \Leftrightarrow y=1; \Leftrightarrow x=3;$

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5 gt 1 x 4 0 proshu obyasnit kak v pervom neravenstve poluchaetsya 3 2x gt

osnovanie ravnobedrennogo treugolnika ravno 18 sma bokovaya storona ravna 15 smc89400e2fa36a4e0573c978fd0ec699a 51908

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