Question

Dada a funcao y=x²+3x-10 Determine os zeros da função valor de x e x indicar as coordenadas do vértice

Answer 1

∆=3² -4.1.(-10)=9 +40= 49 => √∆=7

x' = -b+√∆/2a = -3+7/2= 4/2 = 2 ✓

x" = -b-√∆/2a = -3-7/2= -10/2 = -5 ✓

xv= -b/2a = -3/2 ✓

yv= -∆/4a= -49/4 ✓