Question

d) x
2 − x − 2 = 0
e) x
2 − 5x + 10 = 0
f) x
2 − 4x + 3 = 0

Answer 1

Explicação passo-a-passo:

d) 2 - x - 2 = 0

- x = - 2 + 2

- x = 0

x = 0

e) 2 - 5x + 10 = 0

- 5x = - 10 - 2

- 5x = - 8

x = 8 / 5

x = 1,6

f) 2 - 4x + 3 = 0

- 4x = - 3 - 2

- 4x = - 5

x = 5 / 4

x = 1,25