Question

1) Calcule a raiz ou zero das funções:
a) f(x) = 3x + 12
b) f(x) = -10 +60x
c) f(x) = -2x + 9
d) f(x) = 7x -28
e) h(x) = -35 +7x
f) g(x) = -6x +18​

Answer 1

Resposta:

a) x = -4

b) x = 1/6

c) x = 9/2

d) x = 4

e) x = 5

f ) x = 3

Explicação passo a passo:

a) f(x) = 3x + 12

3x + 12 = 0

3x = -12

x = -12/3

x = -4

b) f(x) = -10 + 60x

-10 + 60x = 0

60x = 10

x = 10/60

x = 1/6

c) f(x) = -2x + 9

-2x + 9 = 0

9 = 2x

2x = 9

x = 9/2

d) f(x) = 7x - 28

7x - 28 = 0

7x = 28

x = 28/7

x = 4

e) h(x) = -35 +7x

-35 +7x = 0

7x = 35

x = 35/7

x = 5

f) g(x) = -6x + 18​

-6x + 18​ = 0

18 = 6x

6x = 18

x = 18/6

x = 3