作业帮3x+4x-123=4x
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3x+4x-123=4x
3x+4x-123=4x
3x+4x-123=4x
3x+4x-123=4x
3x-123=4x-4x
3x-123=0
3x=123
x=123/3
x=41
我觉得应该是这么算的.以上是具体步骤
X=41
3x+4x-123=4x
3x+4x-4x=123
3x=123
x=41
41
标准答案 41 采纳啊！！！！！！！！！！！！
3x+4x-123=4x
3x+4x-4x=123
3x=123
x=41
41
41
3x+4x-123=4x
3x+4x-123-4x=0
3x+4x-4x-123=0
3x-123=0
3x=123
x=41
一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
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