Question

Y=-x²+x-3 encontre Xv e Yv

Answer 1

Xv = -b/2a

Xv = -1/-2

Xv = 0,5

Yv = ∆/4a

Yv = (1)²-4.(1).(-3)/4.(1)

Yv = -11/4

Yv = -2,75