x-40-3/5x=100（求x,

x-40-3/5x=100（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!)+. x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x 已知3x*x-x=1,求6x*x*x+7x*x-5x+2000 x*x+3x+1 =5 求x (16x-13)/(4x-3)-(20x-24)/(4x-5)=(32x-30)/(8x-7)-(40x-43)/(8x-9)求x 已知：f（x）=x(x-1)(x-2)(x-3)……（x-100),求f'(5) (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 如果1+x+x^2+x^3=0,求x+x^2+X^3+x^4+x^5+x^6+x^7+x^8的值, 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) 3^x=2^x,求x.5^(x-1)·10^3x=8^x求x x-2x+3x-4x+5x.+99x-100x=25求解 2x+3x+4x+5x+x+6x+7x=100 求x:x(10^x)=100 X^lgX=100X 求X 78-x=5x 求x