1800/X+5=1800/X-5,求Ⅹ

1800/X+5=1800/X-5,求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!)+. 78-x=5x 求x x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x x*x+3x+1 =5 求x 4x-5=25-9x+x 求x? x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=? 已知3x*x-x=1,求6x*x*x+7x*x-5x+2000 提取公因式:已知x*x-5x+1=0 求x*x*x-4x*x-4x-1 （（1800/X）-2）×（X+5）=2200,求x 1750+70x-50x-2x^2=.=-2(x-5)^2+1800求详细解 求方程解x-5/x-4+x-9/x-8=x-8/x-7+x-6/x-5 x-4／x-5-x-5／x-6=x-7／x-8-x-8／x-9求大神帮助 (x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几? (x-2)(x*x-6x-9)=x(x-5)(x-3),求6x的算术平方根 3^x=2^x,求x.5^(x-1)·10^3x=8^x求x 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| 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)