2.4x-1.4x+3x+2.4=0

2.4x-1.4x+3x+2.4=0 4x-1.4x-3x+2.4=02.4x-1.4x-3x+2.4=0 2.4x+1.4x+2.4=3x 2.4x-1.4x-3x=5.2-8 2.4^x-7.2^x+3=0 9x-0.9乘7=2x+2.1 x=?9x-0.9乘7=2x+2.1 x=?还有：3(2x-1.2)=2(x+3.5) x=?2.4x-9.8=1.4x-9 解方程2.4-1.4x+3x+2.4=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 方程：3（2x-1.2)=2(x+3.5) 2.4x-9.8=1.4x-9 1.8x-x=2.4x=？ 3*X*X*X+3*X*X-3x-9=0 x=? x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002 9-1.4x=9.8x-2.4 2.4x-9.8=1.4x-9, 2.4x-1.4x=5.2-8 3x-2.4=x解方程 3x+2.4x=10. x-0.25x=2.4