3x≤5x怎么算

3x≤5x怎么算 (x-1)(x-2)(x-3)(x-4)-(x^2-5x)^2-10(x^2-5x)怎么算? (-x+5)(x-3)(x+6)怎么算 3x-5x=8x怎么算 (y-x)(x-y)^3(y-x)^5怎么算 (x^10-x^5+1)/(x^2+x+1) 怎么算?(x^10-x^5+1)/(x^2+x+1)=（x^8-x^7+x^5-x^4+x^3-x+1) x^2-6x+9/x^2-x-6 * x^2-7x+10/x^2-9 * x+3/2(x-5)怎么算? (x+2)(x+3)-(x+6)(x-1) 怎么算? x+4/5-x+5=x+3/3-x-2/2 怎么算 (x^2-3x+1)^3怎么算出x^6-9x^5+30x^4-45x^3+30x^2-9x+1 x/3+x/4+x/5+169=x怎么算 2x^2+7x+5乘以x^2-2x-3怎么算 -(x-3)怎么算 (x-3)/(x^2+3x+2)×(x^2)/(x^2-4x+3)怎么算？ x-1/x-2-x-3/x-4=x-2/x-3-x-4/x-5怎么做? x^8+x^7+x^6+x^5+x^4+x^3+x^2+x+1怎么分解因式 x（2x-3）≤0后怎么算? x²-3x≤10怎么算?