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1. -2, 5, -4

Do you know the second one?

\[Xv= (-b)/2a \]
\[Yv=-\Delta/4a\]

x= -b/(2a) y(-b/2a)=

\[\Delta=b^2-4ac\]

Did you get it?

no i dont know the anwser ? lol

just put the numbers into the formulas and you'll get the answers..

the answer is ( 1,3)

\[a=-3 , b=6, x=(-6)/2(-3)=1, y(1)= -3(1)^2+6(1)=3\]

So the vertex is (1,3)