1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
∫(x^4-4x^2+5x-15)/(x^2+1)(x-2) dx=?
x-2/5x+14=1/4x,
提取公因式:已知x*x-5x+1=0 求x*x*x-4x*x-4x-1
x-1=3x+3 x-3=12-4x 6x-14=5x-10 x+1=2-4x
x的平方-2x+1=15 ; x(2x-5)=4x-10 ; x的平方+5x+7=3x=11
解方程3x-10/x-3 +4x-5/x-1=6x-17/2x-5 +8x-14/2x-3
3x-10/x-3 +4x-5/x-1=6x-17/2x-5 +8x-14/2x-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
(4x+2)/x+(4x-22)/(x-5)=(x-6)/(x-4)+(7x+9)/(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),