Respostas
respondido por:
3
a)
x + 1
5 = 625
x + 1 4
5 = 5
x + 1 = 4
x = 4 - 1
x = 3
"""""""""""""""""""""""""""""""""""
b)
x + 1
3 = 243
x + 1 5
3 = 3
x + 1 = 5
x = 5 - 1
x = 4
********************************
c)
x 2
2 = 512
x 9 . 2
2 = 2
x = 9.2
x = 18
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)
x
27 = 243
3x 5
3 = 3
3x = 5
x = 5/3
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
e)
2x - 6
12 = 1
2x - 6 0
12 = 12
2x - 6 = 0
2x = 6
x = 6/2
x = 3
x + 1
5 = 625
x + 1 4
5 = 5
x + 1 = 4
x = 4 - 1
x = 3
"""""""""""""""""""""""""""""""""""
b)
x + 1
3 = 243
x + 1 5
3 = 3
x + 1 = 5
x = 5 - 1
x = 4
********************************
c)
x 2
2 = 512
x 9 . 2
2 = 2
x = 9.2
x = 18
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)
x
27 = 243
3x 5
3 = 3
3x = 5
x = 5/3
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
e)
2x - 6
12 = 1
2x - 6 0
12 = 12
2x - 6 = 0
2x = 6
x = 6/2
x = 3
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