若3x²-x=1,则6x^3+7x²-5x+2000=?
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
若3x²-x=1,则6x^3+7x²-5x+2000=?
若2x-3y+4=0则x(x*x-1)+x(5-x*x)-6y+7
已知3x²-x=1,则6x³+7x²-5x+2000的值为?
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+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
若x²-3x+5=7则-2x²+6x+3=
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
已知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
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),
解方程(x+1/x+2)-(x+2/x+3)=(x+5/x+6)-(x+6/x+7)
解方程:x+2/x+1-x+3/x+2=x+6/x+5-x+7/x+6