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Реноша
@Реноша
September 2021
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РЕШИТЕ УРАВНЕНИЯ ПОЖАЛУЙСТА
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selmash21
3/(х-2)=2х+1
(2х+1)(х-2)=3
2х^2-4х+х-2-3=0
2х^2-3х-5=0
д=9-4×2×(-5)=49
х1=(3-7)/2×2=-1
х2=(3+7)/2×2=10/4=5/2=2.5
9х+3=(х-7)(1+3х)
9х+3=х+3х^2-7-21х
3х^2-20х-7-9х-3=0
3х^2-29х-10=0
д=841-4×3×(-10)=961
х1=(29-31)/2×3=-1/3
х2=(29+31)/2×3=10
(2у^2+5у+2)/(у^2-4)=1
2у^2+5у+2=у^2-4
2у^2+5у+2-у^2+4=0
у^2+5у+6=0
д=25-4×1×6=1
х1=(-5-1)/2=-3
х2=(-5+1)/2=-2
(5у-2)/(2у+1)=(3у+2)/(у+3)
(5у-2)(у+3)=(2у+1)(3у+2)
5у^2+15у-2у-6=6у^2+4у+3у+2
5у^2+13у-6-6у^2-7у-2=0
-у^2+6у-8=0
у^2-6у+8=0
д=36-4×1×8=4
у1=(6-2)/2=2
у2=(6+2)/2=4
(4х+1)/(х-3)=(3х-8)/(х+1)
(4х+1)(х+1)=(х-3)(3х-8)
4х^2+4х+х+1=3х^2-8х-9х+24
4х^2+5х+1=3х^2-17х+24
4х^2+5х+1-3х^2+17х-24=0
х^2+22х-23=0
д=484-4×(-23)=576
х1=(-22-24)/2=-23
х2=(-22+24)/2=1
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Answers & Comments
(2х+1)(х-2)=3
2х^2-4х+х-2-3=0
2х^2-3х-5=0
д=9-4×2×(-5)=49
х1=(3-7)/2×2=-1
х2=(3+7)/2×2=10/4=5/2=2.5
9х+3=(х-7)(1+3х)
9х+3=х+3х^2-7-21х
3х^2-20х-7-9х-3=0
3х^2-29х-10=0
д=841-4×3×(-10)=961
х1=(29-31)/2×3=-1/3
х2=(29+31)/2×3=10
(2у^2+5у+2)/(у^2-4)=1
2у^2+5у+2=у^2-4
2у^2+5у+2-у^2+4=0
у^2+5у+6=0
д=25-4×1×6=1
х1=(-5-1)/2=-3
х2=(-5+1)/2=-2
(5у-2)/(2у+1)=(3у+2)/(у+3)
(5у-2)(у+3)=(2у+1)(3у+2)
5у^2+15у-2у-6=6у^2+4у+3у+2
5у^2+13у-6-6у^2-7у-2=0
-у^2+6у-8=0
у^2-6у+8=0
д=36-4×1×8=4
у1=(6-2)/2=2
у2=(6+2)/2=4
(4х+1)/(х-3)=(3х-8)/(х+1)
(4х+1)(х+1)=(х-3)(3х-8)
4х^2+4х+х+1=3х^2-8х-9х+24
4х^2+5х+1=3х^2-17х+24
4х^2+5х+1-3х^2+17х-24=0
х^2+22х-23=0
д=484-4×(-23)=576
х1=(-22-24)/2=-23
х2=(-22+24)/2=1