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volshebnica111
@volshebnica111
July 2022
1
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Ребяятушкии помогите плиззз
y+3/y-3 + y-3/y+3 = 20/y^2-9
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jeremy10000
(y+3)(y+3)+(y-3)(y-3)=20
y^2+6y+9+y^2-6y+9-20=0
2y^2-2=0
2(y^2-1)=0
y^2=1
y=sqrt(1)
y=+-1
2 votes
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Answers & Comments
y^2+6y+9+y^2-6y+9-20=0
2y^2-2=0
2(y^2-1)=0
y^2=1
y=sqrt(1)
y=+-1