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evgenia0891m
@evgenia0891m
March 2022
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888Kristina
X=11-3y
x^2-9y^2=55
(11-3y)^2-9y^2=55
y=1
x=11-3*1
x=8
1 votes
Thanks 0
RamEn4ik
Х+3у=11
х^2-9у^2=55
х+3у=11
(х-3у)(х+3у)=55
(х-3у)(х+3у)=55
-
х+3у=11
----------------------
х-3у=44
х+3у=11
х-3у=44
х=11-3у
(11-3у)-3у=44
(11-3у)-3у=44
11-9у=44
-9у=33
у=-3,6
х+3(-3,6)=11
у=-3,6
х=21,8
у=-3,6
0 votes
Thanks 0
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Answers & Comments
x^2-9y^2=55
(11-3y)^2-9y^2=55
y=1
x=11-3*1
x=8
х^2-9у^2=55
х+3у=11
(х-3у)(х+3у)=55
(х-3у)(х+3у)=55
-
х+3у=11
----------------------
х-3у=44
х+3у=11
х-3у=44
х=11-3у
(11-3у)-3у=44
(11-3у)-3у=44
11-9у=44
-9у=33
у=-3,6
х+3(-3,6)=11
у=-3,6
х=21,8
у=-3,6