Question

Determine o 0.

A) f(x)= x-5
B)f(x)= 1/2x-1
C)f(x)= -2x+1
D)f(x)= 3x+12

Answer 1

a) X-5=0
x=5

b)1/2x-1=0
1/2x=1(2). "mmc"
x=2

c)-2x+1=0
-2x=-1
x=-1/-2
x=1/2

d) 3x+12=0
3x=-12
x=-12/3
x=-4

Answer 2

A)
f(x)= x-5
0 = x - 5
5 = x
x = 5

B)
f(x)= 1/2x-1
0 = 1/2 x - 1
1 = x/2
2 = x
x = 2

C)
f(x)= -2x+1
0 = - 2x + 1
2x = 1
x = 1/2

D)
f(x)= 3x+12
0 = 3x + 12
- 12 = 3x
3x = - 12
x = - 12/3
x = - 4