Question

Calcule o zero de cada função
A) f (x) = 3x - 12
B) f (x) = - x + 9
C) f (x)= 2 (x)= 2x +3/4
D) f (x)= - 1/5 x - 6
E) y=3×-6
F) y=-×-1
i)=+2/5×+1
J)3/4×+2/5

Answer 1

a) f (x) = 3x - 12
0 = 3x - 12
-3 x = - 12
3 x = 12
3 x = 12
X = 12/3
x = 4