Question

Encontre as coordenadas do vértice da função:

f(x) = -x²+3x+5

Answer 1

∆=3² -4.(-1).5= 9+20=29

xv= -b/2a = -3/2(-1)= -3/-2= 3/2 ✓

yv=-∆/4a = -29/4(-1)= -29/-4= 29/4 ✓