Question

1. Calcule as raízes das seguintes funções:
f (x) = 5x
f (x) = -8x + 17
f (x) = ⅓ - 2x
f (x) = 27x - 5/4
f (x) = 13 - 13x

Answer 1

Resposta:

a) x = 4, b) x = -5, c) x= 5 , d) x = -2 , e) x = 1

Explicação passo-a-passo:

a) 2x - 8

2x = 8

x =8/2

x = 4

b) 4x + 20

4x = -20

x = -20/4

x = -5

c) -2x + 10

-2x = - 10 .(-1)

2x = 10

x = 10/2

x = 5

d) 13x + 26

13x = -26

x = -26/13

x = -2

e) -3x + 3

-3x = - 3 .(-1)

3x = 3

x = 3/3

x = 1