Question

3) 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

Explicação passo-a-passo:

a)

3x + 12 = 0

3x = -12

x = -12/3

x = -4

b)

-10 + 60x = 0

60x = 10

x = 10/60

x = 1/6

c)

-2x + 9 = 0

-2x = -9

x = -9/-2

x = 9/2

d)

7x - 28 = 0

7x = 28

x = 28/7

x = 4

e)

-35 + 7x = 0

7x = 35

x = 35/7

x = 5

f)

-6x + 18 = 0

-6x = -18

x = -18/-6

x = 3