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aziza20021
@aziza20021
July 2022
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решите методом подстановки систему уравнений:
x²-3y²=4
x+y=6
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zapotockayaa
x^2-3(6-x)^2=4
x^2-3(36-12x+x^2)=4
x^2-108+36x-3x^2=4
-2x^2+36x-112=0(/(-2)
x^2-18x-56=0
D=324-224=100
корень из D=10
x1=18-10/2=4
x2=18+10/2=14
Ответ:4,14
2 votes
Thanks 3
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Answers & Comments
x^2-3(36-12x+x^2)=4
x^2-108+36x-3x^2=4
-2x^2+36x-112=0(/(-2)
x^2-18x-56=0
D=324-224=100
корень из D=10
x1=18-10/2=4
x2=18+10/2=14
Ответ:4,14