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zyt
@zyt
August 2022
2
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решите уравнение:
136/х-2 - 130/х = 4
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Danilyas
136 x - 130 x=6 x
6x - 2=4
6 x = 6
x = 1
0 votes
Thanks 0
важно0
136/х-2-130/х-4=0
об.знаменатель: х(х-2)
136*х-130*(х-2)-4х(х-2)=136х-130х-260-4х²+8х=(-4х²+14х-260)/-2=2х²-7х+130
2х²-7х+130=0
д=49-4*2*(-130)=1089
х1=10
х2=-6,5
1 votes
Thanks 2
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Answers & Comments
6x - 2=4
6 x = 6
x = 1
об.знаменатель: х(х-2)
136*х-130*(х-2)-4х(х-2)=136х-130х-260-4х²+8х=(-4х²+14х-260)/-2=2х²-7х+130
2х²-7х+130=0
д=49-4*2*(-130)=1089
х1=10
х2=-6,5