Автор - egorfrolov200

(1.8-0.3y)(2y+9)=0 Помогите Пожалуйста!

Ответ

Автор - di19balueva
3.6y+16.2-0.6y^2-2.7y=0
-0.6y^2+0.9y+16.2=0 | : -3
0.2y^2-0.3y-5.4=0
D=0.3^2+4*0.2*5.4=4.41
y1=-4.5
y2=6
Ответ:-4,5; 6.


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