15%x+x=3.45,x=?
x+x=x+15
(X+X)+(X-X)+(X*X)+(X/X)=100
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值
X/15 + X/12 + X/10 = 1365,求X,
(25/X)X(30/X)= 15/X怎么算
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!)+.
计算1/[x(x+3)]+1/[(x+3)(x+6)]+.+1/[(x+15)(x+18)]=?
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
INPUT "x=";x
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
X+X+X+X+X+X+100X=1690 问:X等于多少
(x-22)+(x-24)+(x-27)+(x-20)=x