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pollyov03
@pollyov03
July 2022
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Пожалуйста, СРОЧНО!
Решит уравнения:
1) (x-1) (x+2) - x (x+3)= 3x-1
2) x (x+2) - (x+3) (x+1)=2x+3
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Хадия95
(x-1)×(x+2)-x×(x+3)=3x-1.х^2+2х-х-2-х^2-3х=3х-1.х-2-3х=3х-1.х-3х-3х=2-1.-5х=1.х=-0,2.
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JamuuкA
1) х×(х+2)-(х+3)×(х+1)-2х+3
х²+2х-(х²+х+3х+3)-2х+3
х²+2х-(х²+4х+3)-2х+3
х²-х²-4х-3+3
-4х
2)х×(х+2)-(х+3)×(х+1)=2х+3
х²+2х-(х²+х+3х+3)=2х+3
х²+2х-(х²+4х+3)=2х+3
х²-х²-4х-3=3
-4х-3=3
-4х=3+3
-4х=6
х=-6/4 это дробь
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Answers & Comments
х²+2х-(х²+х+3х+3)-2х+3
х²+2х-(х²+4х+3)-2х+3
х²-х²-4х-3+3
-4х
2)х×(х+2)-(х+3)×(х+1)=2х+3
х²+2х-(х²+х+3х+3)=2х+3
х²+2х-(х²+4х+3)=2х+3
х²-х²-4х-3=3
-4х-3=3
-4х=3+3
-4х=6
х=-6/4 это дробь