(44-X)(1+1/4)+X(1-1/7)=44 X=28
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
计算:1/(x^2-7x+10)+1/(x^2-x-2)+1/(x^2+5x+4)+1/(x^2+11x+28)=( )
若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)
3/x-1=4/x 6/x+1=x+5/x(x+1)
x(x^2-1)+2x^2 *(x+1)-3x*(2x-5)=x(3x^2-4x)-28
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
先化简再求值先化简再求值:(x-x/x+1)(x+1/x^2+4x+4)(x^2-4/x^2-2x),其中x=-0.5
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
方程 3x(7-2x)+5x(2x-1)=4x(x-3)+56
(1)6+2(x-3)=X (2)8-2(x-7)=x-(x-4) (3)2x-(1.5x-1)=2(1.5x-1)
x+1分之x+2减去x+3分之x+4=x+5分之x+6减去X+7分之x+8 (解方程)
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