Question

2) complete as tabelas:

Answer 1

2)

• 8 - x
• 8 - 0 = 0
• 8 - 3 = 5
• 8 - 0,5 = 7,5
• 8 - x = 0
- x = - 8
x = 8

• 3m
• 3.0 = 0
• 3.2 = 6
• 3.0,6 = 1,8
• 3m = 21
m = 21/3
m = 7

3)

x = 5

a) 2x
2.5 = 10

b) 3x + 1
3.5 + 1
15 + 1
16

c) 9 - x
9 - 5
4

d) x - 15
5 - 15
- 10

e) x²
5.5
25

f) 2x³ - 1
2.5³ - 1
2.25 - 1
50 - 1
49