Respostas

2014-05-22T13:08:27-03:00
A) 2x= 2(5)=10
b) 9-x= 9-5= 4
c)x²= 5²= 25
d)x-15= 5-15= -10
e)3x+1= 3(5)+1= 15+1= 16
f)2x³-1= 2(5)³-1= 2(125)-1= 250-1= 249
2 5 2
2014-05-22T13:14:01-03:00
a) 2x = 2*5 = 10

b) 9 - x = 9 - 5 = 4

c) x² = 5² = 25

d) x - 15 = 5 - 15 = - 10

e) 3x + 1 = 3*5 + 1 = 16

f) 2x³ - 1 = 2*5³ + 1 = 249
2 3 2