Question

f)
2) Encontre os zeros das funções abaixo:
a) f(x)=2x+1 b) f(x)=-x-3 b) f(x)=-x+4 d) f(x)=5x-5 e) f(x)=-10x
f(x)=2x+7

Answer 1

Resposta:

a)

$2x + 1 = 0 \\ 2x = - 1 \\ x = - \frac{1}{2} \\ x = - 0.5$

b)

$- x - 3 = 0 \\ x = - 3$

c)

$- x + 4 = 0 \\ x = 4$

d)

$5x - 5 = 0 \\ 5x = 5 \\ x = \frac{5}{5} \\ x = 1$

e)

$- 10x = 0 \\ x = - \frac{ 0}{10} \\ x = 0$

f)

$2x + 7 = 0 \\ 2x = - 7 \\ x = - \frac{ 7}{2} \\ x = -3.5$