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michail228
@michail228
October 2021
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15пожалуйсив быстрее.......
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OlgaLaz08
18/(х+3)(х-3) - х/(х+3) - 4/(х-3)=0
18/(х+3)(х-3) - х*(х-3)/(х+3) - 4*(х+3)/(х-3)=0
(18- х^2+3х- 4х-12)/(х+3)(х-3)=0
(-х^2-х+6)/
(х+3)(х-3)=0
-х^2-х+6=0 |*(-1)
х^2+х-6=0
D=1+4*6=25
х1=2
х2=-3
(х-2)(х+3)/
(х+3)(х-3)=0
(х-2)/(х-3)=0
х-2=0
х=2
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Answers & Comments
18/(х+3)(х-3) - х*(х-3)/(х+3) - 4*(х+3)/(х-3)=0
(18- х^2+3х- 4х-12)/(х+3)(х-3)=0
(-х^2-х+6)/(х+3)(х-3)=0
-х^2-х+6=0 |*(-1)
х^2+х-6=0
D=1+4*6=25
х1=2
х2=-3
(х-2)(х+3)/(х+3)(х-3)=0
(х-2)/(х-3)=0
х-2=0
х=2