X-1.24=0.
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X-1.24=0.X-1.24=0.X-1.24=0.把方程这样转：x-0.3x=1.240.7x=1.24x=124/70化简得x=62/35
X-1.24=0.
X-1.24=0.
X-1.24=0.
把方程这样转：
x-0.3x=1.24
0.7x=1.24
x=124/70
化简得 x=62/35
X-1.24=0.
X-1.24=0.
X-1.24=0.
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
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