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Lenazh
@Lenazh
October 2021
1
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пожалуйста помогите. умоляяяяю
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KakimganAibar
X=13- 2y x=13- 2y
(13-2y) y=15 13y- 2y ^2 -15=0
-2y^2+13y- 15=0
D=169- 120=49
X1/2=- 13-
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(13-2y) y=15 13y- 2y ^2 -15=0
-2y^2+13y- 15=0
D=169- 120=49
X1/2=- 13-