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viking2014
@viking2014
June 2022
1
5
Report
помогите с одз
прошу срочно
и с пояснением
упр 195
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isom
А и б будут одинаково решены
2х+4=0
2х=-4
х=-2
в)
4х(х-2)=12(х-2)
4х²-8х+12х-24
4х²-8х-12х+24=0
4х²-20х+24=0
х²-5х+6=0
Д=25-4*6*1=25-24=1
х₁=(5-1)/2=2
х₂=(5+1)/2=3
д)
(х-1)+2(х+5)=0
х-1+2х+10=0
3х+9=0
3х=-9
х=-3
е)
5х-10=4х
5х-4х=10
х=10
ж)
4/2х + 1/2х = 5
5/2х = 5
5=5*2х
10х=5
х=5/10=1/2
1 votes
Thanks 1
viking2014
А З
viking2014
болшое спасииибо
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Answers & Comments
2х+4=0
2х=-4
х=-2
в)
4х(х-2)=12(х-2)
4х²-8х+12х-24
4х²-8х-12х+24=0
4х²-20х+24=0
х²-5х+6=0
Д=25-4*6*1=25-24=1
х₁=(5-1)/2=2
х₂=(5+1)/2=3
д)
(х-1)+2(х+5)=0
х-1+2х+10=0
3х+9=0
3х=-9
х=-3
е)
5х-10=4х
5х-4х=10
х=10
ж)
4/2х + 1/2х = 5
5/2х = 5
5=5*2х
10х=5
х=5/10=1/2