Question

encontre as coordenanadas do vérticve para cada função quadratica :

 

a) y=x²-x+1

b) y-2x²+7x+12

Answer 1

ACHAR AS COORDENADAS

X(-B/2A,-DELTA/4A)

a) y=x²-x+1 = > -b/2a=1/2   e -DELTA/4A= -((-1)²-4*1*1)/4 = -3/4
 (1/2,-3/4)
b)y=2x²+7x+12 => -b/2a= -7/2*2=-7/4 e -DELTA/4A= -(7²-4*2*12)/4*2= -47/8
(-7/4,-47/8)
pronto!