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Лера1356
@Лера1356
July 2022
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Решите уравнение 1) 2у^2-(5+6у)+(у-2у^2)=9-7у
2)(4х-9)-(2х-3)-х^2=5-(х+х^2)
3)(t^2+2r-3)-(t^2-3t+4)=t-1
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yanusia03
1)само уравнение
2y^2-(5+6y)+y-2y^2=9-7y
-5-6y+y=9-7y (2у в квадрате сократились)
-5-5y=9-7у
-5у+7у=9+7
2у=14
у=7
2) само уравнение
4x-9-2x+3-x^2=5-x-x^2
4x-9-2x+3=5-x
2x-6=5-x
2x+x=5+6
3x=11
x=3 целых 2/3
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Answers & Comments
2y^2-(5+6y)+y-2y^2=9-7y
-5-6y+y=9-7y (2у в квадрате сократились)
-5-5y=9-7у
-5у+7у=9+7
2у=14
у=7
2) само уравнение
4x-9-2x+3-x^2=5-x-x^2
4x-9-2x+3=5-x
2x-6=5-x
2x+x=5+6
3x=11
x=3 целых 2/3