Question

Determine os zeros das funções:
a) y=3x-2. c) f(x)= -3+2x/3
d) y= -4x-1/5. e) y= x -3/4
f) f(x)=8x+256 ?

Answer 1

a) y=0
3x-2=0
3x=2
x=2/3

c) f(x)=0
-3+2x/3=0
2x/3=3
2x=9
x=9/2
x=4,5

d) y=0
-4x-1/5=0
-4x=1/5 ×(-1)
4x= -1/5
x= -1/5 ÷ 4
x= -1/5 × 1/4
x= -1/20

e) y=0
x-3/4=0
x=3/4

f) f(x)=0
8x+256=0
8x= -256
x= -256/8
x= -32