2(x-3)(-x+1)怎么做

(x-1)(x+2)(x+3)(x+6)怎么做? (2x+3)(-x-1)怎么做 (2x+3)(-x-1)怎么做 2(x-3)(-x+1)怎么做 3[x-2(x-1)]=9x怎么做 (x-1)(x-2)(x+3)怎么做 (X-1)(x-2)(x-3)怎么做呀? x-1/x-2-x-3/x-4=x-2/x-3-x-4/x-5怎么做? 3分之x-1=5分之x+2+x 怎么做? 怎么做? (x-4)(x-3)-(x-2)(x-3)怎么做 |X+3|+|2-X|>5怎么做? |x+1|+|x+2|怎么做? 1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做 x-2/x+3=1/3怎么做? 1/3x+1/5=x/2怎么做 5/2X-3/1X=1怎么做 (x-1)/2=5-(x-1)/3怎么做 (x-1)/2=5-(x-1)/3怎么做