Question

4.Calcule a raiz da função:
a) f(x) = 3x – 6
b) g(x) = 2x + 10
c) h(x) = -2x + 10
d) g(x) = x + 1

Answer 1

a) 3x - 6 = 0

3x = 0 + 6

3x = 6

x = 6

---

3

x = 2

b) 2x + 10 = 0

2x = 0 - 10

2x = - 10

x = - 10

---

2

x = - 5

c) -2x + 10 = 0

-2x = 0 - 10

-2x = - 10 . (-1)

2x = 10

x = 10

---

2

x = 5

d) x + 1 = 0

x = 0 - 1

x = - 1