Question

Estude os sinais das seguintes funções do 2° grau:
a) f (x) = x2 - 8x + 12
b) f (x) = -x2 + 8x – 12
c) f (x) = x2 - 4x – 12

d) f (x) = -x2 + 6x – 9
e) f (x) = x2 - 2x + 4
f) f (x) = 2x2 + 4x - 6

Answer 1

answer:

a) $x = 2$

b) $x = 3 multipliciti 2$

c) $x = - 6$

d) $x = \frac{9}{4}$

e) $constant function$

f) $x = \frac{1}{2}$