Question

ache a raiz da funcao f(x)=7x-56

Answer 1

$7x - 56 = 0$

$x = \frac{56}{7} = 8$

Answer 2

raiz será o valor de "x" quando f(x) = 0

então

7x - 56 = 0

7x = 56

x = 56/7

x = 8

Resposta: raiz = 8