Question

Alguém me ajuda por favor????

Answer 1

Resposta:

1. a). 12, 20, 1263, 0, v25 (raiz de 25).

b). 12, -15, 20, 1263, 0, v25.

c).  12, -15, 20, 1263, 0, v25, 3,15, 0,666..., -2,7, 3,121212...

d). v3 (raiz de 3) e 1,31400258...

2. a). x - 3 = 9

x = 9 - 3

x = 6

b). 3y - y = 8

2y = 8

y = 8 : 2

y = 4

c). x + 5 = 20 - 4x

4x + x = 20 - 5

5x = 15

x = 15 : 5

x = 3