2/3-1/x=1/6 x-4X5/8=1/5 x(1/4+2/5)=14/13
1 3x^2=2x 3 x(3x-1)=3-x5 4x(1-x)=1要写过全程
(3x-5)X2=3X(x-1)+11 5X(3x+2)-1=5x+199 (10x+5)X5分之2=3X(x-1)+9
1x5+2x5+3x5+4x5+5x5… 麻烦给我一个公式.
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
(-3.14)x5.597+(3.14)x(-5.597)=_______.(-1/2+2/3-1/4)x(-24)=_
若x2+x5=a0+a1(x-1)+a2(x-1)2+a3(x-1)3+a4(x-1)4+a5(x-1)5,则a4=__
求解一个方程急 X(1次方)+X2+X3=5 X2+X3+X4=1 X3+X4+X5=-5 X4+X5+X1=-3 X5
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
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),