D= b^2 - 4 * a * c = 81 - 4 * 2 * 5 = 41
D=(2p+1)^2+4p(2-p)=4p^2+1+4p+8p-4p^2=12p+1
D<0 и p<0
12p+1<0
p<-1/12
69/4:(17/4-2*7/3*3/5)
69/4:(17/4-2*7*1/5)
69/4:29/20
345/29
X^2+y^2=41
x=y-1
(y-1)^2+y^2=41
y^2-2y+1+y^2-41=0
2y^2-2y-40=0
D=4+320=324
x1=20/4=5 y1=6
x2=16/4=4 y2=5
Ответ: A(5;6) и B(4;5)