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lyna14
@lyna14
October 2021
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пожалуйста помогите *))
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pomoshnik09
1) 3*(9-х)=2*(х+7)
27-3х=2х+14
-3х-2х=14-27
-5х=-13
х=-16/-5=3,2
2)(х+1)²=(х-2)(х+2)
х²+2х+1=х²-4
2х=-4-1
2х=-5
х=-2,5
0 votes
Thanks 1
lyna14
большое спасибо
lyna14
а ты можешь сделать г,ғ, д
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Answers & Comments
27-3х=2х+14
-3х-2х=14-27
-5х=-13
х=-16/-5=3,2
2)(х+1)²=(х-2)(х+2)
х²+2х+1=х²-4
2х=-4-1
2х=-5
х=-2,5