1) 12y^2+16y-3=0
2) 2y^2-5y-3=0
3) 5a^2+9a+4=0
4) a^2+9a+4=0

1) 9x-5x^2=-2
2) a^2=52a-576
3) -y^2=5y-14
4) c^2-25=c-5

1)25=26a-a^2
2) a^2=4a+96
3) 10-29a=3a^2
4) 3c^2+3=10c

1) (2y-3)×(5y+1)=2y+2/5
2) -y×(y+7)=(2+y)×(y-2)
3 (3y-1)×(y+3)=y(6y+1)
4) (y+1)×(y-1)=2(5y+10,5)
Пожалуста помогите решить эти задачи очень прошу!!!
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