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seniorne4aew20
@seniorne4aew20
July 2022
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рациональные уравнение помогите пожалуйста
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n1982
4х²+12х+х-3х²=16х
х²+13х-16х=0
х²-3х=0
х(х-3)=0
х=0
х-3=0
х=3
2)х≠3
х²=2х
х²-2х=0
х(х-2)=0
х=0
х=2
3)х≠4
х²+3х=-х²+х
х²+3х+х²-х=0
2х²+2х=0
2х(х+1)=0
х=0
х=-1
4)(2х+3)х=(3х+2)(х+2) х≠0 х≠-2
2х²+3х=3х²+6х+2х+4
2х²+3х-3х²-8х-4=0
-х²-5х-4=0
х²+5х+4=0
D=25-16=9
х=4
х=1
5) х≠3 х≠-1
(4х+1)(х+1)=(3х-8)(х-3)
4х²+4х+х+1=3х²-9х-8х+24
4х²+5х+1-3х²+17х-24=0
х²+22х-23=0
D=484+92=576
х=1
х=-23
6) 4х²-11х-3=0 х≠3
D=121+48=169
х=3 не корень
х=-1/2
7)у≠2 у≠-2
2у²+5у+2=у²-4
у²+5у+6=0
D=25-24=1
х=-3
х=-2 не корень
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Answers & Comments
х²+13х-16х=0
х²-3х=0
х(х-3)=0
х=0
х-3=0
х=3
2)х≠3
х²=2х
х²-2х=0
х(х-2)=0
х=0
х=2
3)х≠4
х²+3х=-х²+х
х²+3х+х²-х=0
2х²+2х=0
2х(х+1)=0
х=0
х=-1
4)(2х+3)х=(3х+2)(х+2) х≠0 х≠-2
2х²+3х=3х²+6х+2х+4
2х²+3х-3х²-8х-4=0
-х²-5х-4=0
х²+5х+4=0
D=25-16=9
х=4
х=1
5) х≠3 х≠-1
(4х+1)(х+1)=(3х-8)(х-3)
4х²+4х+х+1=3х²-9х-8х+24
4х²+5х+1-3х²+17х-24=0
х²+22х-23=0
D=484+92=576
х=1
х=-23
6) 4х²-11х-3=0 х≠3
D=121+48=169
х=3 не корень
х=-1/2
7)у≠2 у≠-2
2у²+5у+2=у²-4
у²+5у+6=0
D=25-24=1
х=-3
х=-2 не корень