12.5x-0.75x+3=7.3-1.5x

12.5x-0.75x+3=7.3-1.5x 求12.5x-0.75x+3=7.3-1.5x的解 12.5x-0.75x+3=7.3-1.5x怎么解 x-0.75x=1. 已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10) 1.x/9+x=62.x/x+1 + x+1/2x = 3 f(x)=x+1.当x≥3,f(x)=4-x,当x 用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+. 1.(1/X-1 )-2=X^-3X/X^-12.（X/X+1)^+5(X/X+1)+6=03.（8(X^+2X)/X^-1）+ 3（X^-1)/X^+2x (x+3)(x-4)-x(x-2),化简求值,其中x=12.5 不要检验!1.x+1/x-1 - 3x-3/x+1 = 22.7/x^2+x + 3/x^2-x = 6/x^2-1 1.f(x)=3|x| 2.f(x)=x+9/x 求单调区间 1.(x*2-3x+3)/(x*2-3x+2)-(x*2-5x+7)/(x*2-5x+6)-1/(x*2-4x+3)2.1/x(x+1)+2/(x+1)(x+3)+3/(x+3)(x+6) 3.已知：x*2-3x+1=0,求x*2+1/x*2. 3x*x=1600+x*x-80x (X+1)X(X+2)X(X+3)=504 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 2x+{3X(12.5-x)}=30MEIYOU 1-3x=1.5x-0.75 x等于多少