(1+50%)x×0.9+(1+40%)(500-x)×0.9-500=157
[x(x+1)+x平方(x-1)]+(-3x)
若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)
(3x/x-1-x/x+1)×x²-1/x 其中x=根号2-2 先化简
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
(1+50%)x×0.9+(1+40%)(500-x)×0.9-500=157 用去括号、移项、合并同类项、系数化为1的
( 3.6-1)x=3.25 12.5x-0.9x=52.2 x-0.72x=0.336 8x-0.5x=37.5 0.
先化简再求值:1.1-(1-(1/1+x)²-x/(x²+2x+1),其中x=0.9
(1*百分之35)x*0.9-x-50=208(求x)
x除55%=100 60%x=30 x+50%x=4.5 (1-25%)x=72 4x+40%x=176 解方程
(x-1)^3(x+1)(x-2)/(x+4)
(x+1)(x+2)(x+3)(x+4)+1
计算 x(x+3)-(x-1)(x-2)