Ok guys : use the information provided to write the vertex form equation of each parabola y=-12x^2+192x-769 explain this is a grade
2)solve each equation by completing the square : n^2+16n-74=-3
3)solve each equation by factoring: 6n^2+48n+90=0

The vertex for the first one is: (8,-1)
the answer for the second one is: n = -8 + with a - at the bottom square root of 151
the answer for the third question is: n = (-3,-5) 

hope i helped please thank, rate, and give me best anyswer if you're on a desktop thank you :)

Bi’m pretty sure hope it works