Question

Calcule a raiz ou zero das funções
f(x) = − 10x + 60

f(x) = − 3x + 9


f(x) = − 7x – 28


f(x) = − 35 + 7x


f(x) = 6x – 18

Answer 1

f(x) = -10x + 60

-10x + 60 = 0

-10x = -60

10x = 60

x = 60/10

x = 6

f(x) = -3x + 9

-3x + 9 = 0

-3x = -9

3x = 9

x = 9/3

x = 3

f(x) = -7x - 28

-7x - 28 = 0

-7x = 28

7x = -28

x = -28/7

x = -4

f(x) = -35 + 7x

-35 + 7x = 0

7x = 35

x = 35/7

x = 5

f(x) = 6x - 18

6x - 18 = 0

6x = 18

x = 18/6

x = 3