(x-25)÷7=x÷9-1
x-2/(x^2-9)(1+(2x-7/x^2-4x+4)÷(x+1)/(x+3)其中x=2010
(x-25)÷7=x÷9-1
X÷(X-9)=3.25 (X-7)÷(45-X)=1
如果3x*x-x=1那么9x*x*x*x+12x*x*x-3x*x-7x+2001等于多少
当x=9/2时,求(x^2+7x+10)/(x^2+6x+5)×(x^3+1)/(x^2+4x+4)÷(x^2-x+1)
X+(3X-16)÷25%=10(x+1)
2-x/x²-9(1+2x-7/x²-4x+4)÷1/x+3
1. x+0.5x=6 4x+16=40 x/5=32% x-4/9x=10/21 x-1/8x=5/8 7x÷2=2.
若x等于它的倒数则(x-1)(x+2)/x-1÷x^2-9/x+3=
先化简,再求值:1/x+1-3-x/x²-6x+9÷x²+x/x-3,其中x=根号2.
y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1
设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),