Question

calcule o zero de cada função

a)f(X)=-5X+4

B)f(x)=4x-20

c)f(X)=1/3x+120

d)f(x)=x+11

Answer 1

a) 0 = -5x + 4 5x = 4 x = 4/5 
b) 0= 4x+20-4x=20x = 20/4x=5 
c) 0 = 1/3x + 120-1/3x = 120x= 120/1/-1/3 x= -120/3x = - 40 
d) 0 = x+11-x = 11 (-1)x = -11