resolve para mim por favor
josuemacena:
o x é +8
Respostas
respondido por:
0
a)
x = 8 e y = - 2
= 2x + y/3
= 2.8 + ( -2)
------
3
= 16 - 2
------
3
= 3.16 - 2 48 - 2 46
------------ = ---------- = -------
3 3 3
*********************************
b)
2(x + 7) = 2x + 14
x = 8
= 2.8 + 14
= 16 + 14
= 30
******************************
c)
x = 8 e y = - 2
4 4
3x + y = 3.8 + (-2) = 24 + 16
= 40
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)
4x/2 = 4x = 2x
-------
2
2x
= 2.8
= 16
***********************
e)
x = 8
= x² + 1
= 8² + 1
= 64 + 1
= 65
x = 8 e y = - 2
= 2x + y/3
= 2.8 + ( -2)
------
3
= 16 - 2
------
3
= 3.16 - 2 48 - 2 46
------------ = ---------- = -------
3 3 3
*********************************
b)
2(x + 7) = 2x + 14
x = 8
= 2.8 + 14
= 16 + 14
= 30
******************************
c)
x = 8 e y = - 2
4 4
3x + y = 3.8 + (-2) = 24 + 16
= 40
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)
4x/2 = 4x = 2x
-------
2
2x
= 2.8
= 16
***********************
e)
x = 8
= x² + 1
= 8² + 1
= 64 + 1
= 65
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