(1000-300)÷25(x+2)≤10-6
(1000-300)÷25(x+2)≤10-6
x²+2x/x²-6x+9÷x²-4/x²-3x ,
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
化简:根号x^2+6x+9+根号x^2-4x+4+根号x^2-10x+25
(x+5)²-(x-2)(x-3) =x²+10x+25-(x²-5x+6) *5x怎么来
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
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
(2x^-5x+2/6x^+13x+6)*(6x^-5x-6/6x^-17x+10)*(12x^+8x-15/2x^-x
(10-√2X×2X-25)÷2=X 解出X
y=x-10,x≥6和8-2x,-2≤x
4x-2=3x+1 -x+3=10 x-7=11-x x=四分之一x+6
若-3≤x ≤2,化简|x-2|+根号(x+3)²+根号x²-10x+25