0.4(x-3)/0.3-(0.1x-0.2)/0.04=1-(x-1/2)

x-2-2-x/2=x-2/3 x-0.6/0.4+x=0.1x+1/0.3 解方程1.8-8x/1.2-1.3-3x/2-5x-0.4/0.31.8-8x/1.2-1.3-3x/2-5x-0.4/0.3=0 (x-0.6)/0.4+x=(0.1x+1)/0.3 (x-0.6)/0.4-x=(0.1x+1)/0.3 0.5x+3(0.3-0.2x)≥0.4x 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 4-0.3x=3-0.4x 4-0.3X=3-0.4X 一元二次方程的解法 ​9x²=16(x+1)²9x²=16(x+1)²3(x-2)²=x(2-x)(x-2)²-6(x-2)+10=12x²+5x-4=0(用配方法)0.1x²-0.3x=1 3(x-7)-5(4-x)=15 0.2分之0.1x+0.3+2.5=0.4x-1 x平方+3x-0.3=0 x的平方 5x-6=0.4x(x 3)-(x 3)(x 1)=0解方程. 0.4(x-3)/0.3-(0.1x-0.2)/0.04=1-(x-1/2) 0.3/0.4(x-3)-0.04/0.1x-0.2=1-2/x-1 x的平方+2(根号3+1)x+2根号3=0 (x-3)的平方-(x+3)的平方=2(x-5)(x+1) 0.2x的平方-0.1=0.4x 1.8-8x/1.2-1.3-3x/2-5x-0.4/0.3=0 (1.8-8x)/1.2-(1.3-3x)/2-(5x-0.4)/0.3=0 1.8-8x/1.2-1.3-3x/2-5x-0.4/0.3=0