Question

f (x)= -x elevado a 2+4x+5

Answer 1

y= -x+4x+5

xv= -b/2a
xv= -4/ 2.(-1)
xv= -4/-2
xv=2


y= -x²+4x+5
y= - (2)² + 4.2 + 5 
y= -4 + 8 + 5
y= 9