25%x-0.75=1/2÷2/5
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
((x²-5x+6)/(12-7x+x²))²÷((x²+3x+2)/(x
解方程:(2x+5)(4x*x-10x+25)=8x(x*x+1)
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
x(2x-1)=-3x(x+1)+5x²+3
x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4)
25%x-0.75=1/2÷2/5
x*x+2x+x*x+10x+x*x+25+2x+x*x+1+1+16+x*x+4x*x+9-12x+16x*x+4-1
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
0.75x-1/2x=-5;3x+5=4x+1;3X+5=4X+18;1-7x=x-7;9x+8-7x=3x;-(x-2