Question

Considere as funções f(x) = 2x – 5; y(x) = -3x + 4 e n(x) = 5 + x. Determine o valor de:

Answer 1

Resposta:

f(x)=2x-5

2x-5= 0

2x=5

x= 5/2

x= 2,5

y(x)= -3x+4

-3x+4=0

-3x=-4

-x=-4/3 .(-1)

x= 4/3

x= 1,3

y(x)=5+x

5+x=0

x=-5