Question

Qual e o resultado?
F(×)=1-5×​

Answer 1

Resposta:

F(0)= 1 - 5/2.0 

f(0)=1 

f(-1) = 1- 5/2.(-1) 

f(-1) = 1 + 5/2 mmc 

f(-1) = 2+5/2 

f(-1) = 7 /2

Answer 2

F(x)=1-5x

igualar a zero

0=-5x+1

5x=1

x=1/5