(1) 2/3x+5>1-x x-1≤3/4x-1/8 (2)3(x-1)+13>5x-2(5-x) 5-(2x+1)<
X-2分之X=X-5分之X-4怎么解?还有X减3分之X等于X减1分之X+1
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
(1) x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8
3(x-1)+13>5x-2(5-x) 5-(2x+1)<3-6x
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
x^5+x^4 = (x^3-x)(x^2+x+1)+x^2+x
x+2/x+3-x+1/x+2=x+8/x+9-x+7/x+8
x(2x-1)=-3x(x+1)+5x²+3
(x+2/x+1)-(x+4/x+3)-(x+3/x+2)+(x+5/x+4)
计算(x*x+4x+5)/(x+2)-(x*x+6x+10)/(x+3)+1
用公式法解下列方程x²-4x+1=0-5x²-3x+2=02(x²-2)+2x=x(3x-
3x-4(2x+5)=7(x-5)+4(2x+1)