Question

f(x) = -4x²+4 alguém sabe resolver?

Answer 1

f(x) = -4x² +4

= -x² +1

a = -1

b = 0

c = +1

-b +/- √b² -4*a*c/2a

= 0 +/- √o² -4(-1)*1/2(-1)

= 0 +/- √4/-2

= 0 +/- 2/-2

x1 = 0 +2/-2 = -1

x2 = 0 -2/-2 = 1

s {1,-1}