Question

qual o yvertice e o xvertice de y=-4x²-2x

Answer 1

y= -4x^2 - 2x
a= - 4; b = - 2; c=0
Xv= -b/2a
Xv= -(-2)/2.(-4)
Xv= 2/(-8)
Xv = -2/8(:2)/(:2)
Xv= - 1/4

Yv = - /\ /4a
Yv = -(b^2-4ac)/4(-4)
Yv = - [(-2)^2 - 4.(-4).0]/(-16)
Yv= - [4-0]/(-16)
Yv= - 4/ - 16
Yv= 4/16 (:4)/(:4)
Yv = 1/4

R.: Xv = - 1/4; Yv = 1/4