ax^2+bx+c=0
D=b^2-4ac
x1=(-b+sqrt(D))/2a
x2=(-b-sqrt(D))/2a
D=3^2-4*6*1=9-24=-15
Decisions of does not have
Co-ordinates of top (2 methods )
1) C(x,y) Co-ordinates of top
x=-b/2a x=-3/12=-1/4
y=(4ac-b^2)/4a y=(4*6*1-3^2)/4*6=5/8
Then C(-1/4;5/8)
2) Take pokhidnu y=6x^2+3x+1
y'=12*x+3
12*x+3=0
12*x=-3
x=-1/4
y=6*(-1/4)^2+3*(-1/4)+1
y=5/8
Then C(-1/4;5/8)
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