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roza1995roza
@roza1995roza
November 2021
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selmash21
{х+у=3(х-у)
{х^2+у^2=90
{х+у=3х-3у
{х^2+у^2=90
{х+у-3х+3у=0
{х^2+у^2=90
{-2х+4у=0
{х^2+у^2=90
{х-2у=0
{х^2+у^2=90
х=2у
4у^2+у^2=90
5у^2=90
у^2=18
у1=-V18=-3V2
y2=3V2
x1=-6V2
x2=6V2
(-6V2;-3V2)(6V2;3V2)
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Answers & Comments
{х^2+у^2=90
{х+у=3х-3у
{х^2+у^2=90
{х+у-3х+3у=0
{х^2+у^2=90
{-2х+4у=0
{х^2+у^2=90
{х-2у=0
{х^2+у^2=90
х=2у
4у^2+у^2=90
5у^2=90
у^2=18
у1=-V18=-3V2
y2=3V2
x1=-6V2
x2=6V2
(-6V2;-3V2)(6V2;3V2)