22·2X=11·1×5
3^x=2^x,求x.5^(x-1)·10^3x=8^x求x
求函数Y=(X·X-2X-1)/(X·X-5X-6)的值域?
(x+2)(x-1)+(x+3)(x+1)=x·x-1 求x (5x-4)(2x+5)(3x-6)(2x-4)=(2x-
(2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1
(4x+2)/x+(4x-22)/(x-5)=(x-6)/(x-4)+(7x+9)/(x+1)
(x)-2x·x-x-2x+1=0求x的值,
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
先化简再求值:2x²-4x/x+2·x²+2x/x²-4x+4+4x/2-x,其中x=1/
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x+3/x+1·2x的平方+6x/x的平方+6x+9-x/x+1,其中x=2
y=(2x·x-x+2)/(x·x+x+1),用判别式法求函数值域
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)