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щдуышф
@щдуышф
July 2022
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алгебра 7 класс.
решить уравнение:(у+3)(у-3)+(у+1)(1-у)=2у
х²+5х+6=0
5а(а-2)-3а²(2-а)=0
3х(4-7х)-(7х-4)=0
9х²+6х+1=0
9х²+6х+1=0
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Answers & Comments
Nastyavolk11001
(y+3)(y-3)+(y+1)(1-y)=2y
y²-9+1-y²=2y
2y=-8
y=-4
-------
x²+5x+6=0
D=25-24=1
x1=-2
x2=-3
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Answers & Comments
y²-9+1-y²=2y
2y=-8
y=-4
-------
x²+5x+6=0
D=25-24=1
x1=-2
x2=-3