∵x=45+1=4(5+1)(5+1)(5-1)=
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
提取公因式:已知x*x-5x+1=0 求x*x*x-4x*x-4x-1
3/x-1=4/x 6/x+1=x+5/x(x+1)
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)
3x(7-2x)+5x(2x-1)=4x(x-3)+5
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
1x+2x+3x+4x+5x+6x+7x…+99x=100
(X+2)/(X+1)-(X+4)/(X+3)=(X+6)/(X+5)-(X+8)/(X+7)
解方程:2x+4x+6x...+100x=1-(x+3x+5x+...+99x)
解方程 x+2/x+1+x+8/x+7=x+6/x+5+x+4/x+3
(x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几?