(4 – 2) (x – 2) = 4x – 8?
回答 (12)
2010-01-08 1:51 pm
✔ 最佳答案
(4 - 2)(x - 2) = 4x - 82(x-2) = 4x - 8
2x -4 = 4x -8
4 = 2x
x = 2
2010-01-12 3:31 am
4x - 8 - 2x + 4 = 4x - 8
2x - 4 = 4x - 8
4 = 2x
x = 2
2x - 4 = 4x - 8
4 = 2x
x = 2
2010-01-08 10:01 pm
(2) (x - 2) = 4x - 8
2x - 4x + 4 = 4x - 8
-2x + 4 = 4x - 8
4 + 8 = 4x + 2x
12 = 6x
x = 12 / 6
x = 2
2x - 4x + 4 = 4x - 8
-2x + 4 = 4x - 8
4 + 8 = 4x + 2x
12 = 6x
x = 12 / 6
x = 2
2010-01-08 9:52 pm
(4 – 2) (x – 2) = 4x – 8
2 (x - 2) = 4x - 8
2x - 4 = 4x - 8
2x - 4x = -8 + 4
-2x = -4
x = -4 : -2
x = 2
2 (x - 2) = 4x - 8
2x - 4 = 4x - 8
2x - 4x = -8 + 4
-2x = -4
x = -4 : -2
x = 2
2010-01-08 9:51 pm
simplifying the given
2 ( x - 2 ) = 4 ( x - 2 )
4 ( x - 2 ) - 2 ( x - 2 ) = 0
2 ( x - 2 ) = 0
x - 2 = 0
x = 2
either that or you typed the first group of operations ( 4 - 2 ) in correctly
2 ( x - 2 ) = 4 ( x - 2 )
4 ( x - 2 ) - 2 ( x - 2 ) = 0
2 ( x - 2 ) = 0
x - 2 = 0
x = 2
either that or you typed the first group of operations ( 4 - 2 ) in correctly
2010-01-08 11:33 pm
2
2010-01-08 10:29 pm
(4 - 2)(x - 2) = 4x - 8
2(x - 2) = 4x - 8
x - 2 = (4x - 8)/2
x - 2 = 2x - 4
2x - x = 4 - 2
x = 2
2(x - 2) = 4x - 8
x - 2 = (4x - 8)/2
x - 2 = 2x - 4
2x - x = 4 - 2
x = 2
2010-01-08 10:07 pm
2x-4 -4x +8=-2x + 4
x=2
x=2
2010-01-08 9:52 pm
NO! Wrong.
(4-2) = 2
Therefore:
2(x-2) = 2x-4 NOT 4x-8
(4-2) = 2
Therefore:
2(x-2) = 2x-4 NOT 4x-8
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