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КаринаНяша2343
@КаринаНяша2343
July 2022
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Найдите корни уравнений:
1)х^5-х^4-х+1=10
2) (1/2-5х)^+3/4=(5х-4)^2
3) 4х(х-1)-(2х+5)(2х-5)=1
СРОЧНО ПОМОГИТЕ ДАЮ 50 БАЛЛОВ!!!
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farida3486
1)не знаю
2)(1/2-5х)^2(+3/4)=(5х-4)^2
1/4-5х+25х^2(+3/4)=25х^2-40х+16
1/4я5х+3/4=-40х+16
1-5х=-40х+16я5х+40хк16я1
35х=15
х=3/7
3)4х(х-1)-(2х+5)(2х-5)=1
4х^2-4х-(4х^2(-25)=1
4х^2(-4х)-4х^2+25=1
-4х+25=1
-4х+25-2=0
-4х+24=0
х-6=0
х=6
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Answers & Comments
2)(1/2-5х)^2(+3/4)=(5х-4)^2
1/4-5х+25х^2(+3/4)=25х^2-40х+16
1/4я5х+3/4=-40х+16
1-5х=-40х+16я5х+40хк16я1
35х=15
х=3/7
3)4х(х-1)-(2х+5)(2х-5)=1
4х^2-4х-(4х^2(-25)=1
4х^2(-4х)-4х^2+25=1
-4х+25=1
-4х+25-2=0
-4х+24=0
х-6=0
х=6