X+X+13+[100-(x+13)÷2-X]×3=200

X+X+13+[100-(x+13)÷2-X]×3=200 (3x³+10x²+13x-27)÷(x²+2x-3) 35道.符号^代表平方.读起来就是（X的平方）.1,x^-x-202,x^-9x+203,x^-9x-204,x^+9x+205,x^-18x+326,x^+14x-317,x^+18x+328,x^+14x-329,x^+19x+4810,x^+47x-4811,x^+13x-4812,x^+2x-4813,x^+26x+4814,x^-22x-4815,x^+17x+7216,x^+21x-10017,x^-x-7218,x 计算:[(x+2)/(x+3) - (x+1)/(x+2) + (x+4)/(x+5) - (x+3)/(x+4) / (x^2 + 7x + 13)/(x^2 + 8x + 15) [(x+2)/(x+3)-(x+1)/(x+2)+(x+4)/(x+5)-(x+3)/(x+4)]/[(x的平方+7x+13)/(x的平方+8x+15)] 因式分解(x-1)(x+2)(x+3)(x+6)-13 2*x*x+2.5x=13 x=? (x-1)(x+2)(x+3)(x+6)-13 2X+(2X-13)+5[100-X-(2X-13)]求解这个方程,2X+(2X-13)+5[100-X-(2X-13)]=200 x+2x+3x+.+100x 3(x^4)^6-2(x^5×x^3)^3+x^11×x^13+x^20×x^3×x 解方程((13x-x^2)/(x+1))(x+(13-x)/(x+1))=42 (13x-x^2)/(x+1)[x+(13-x)/(x+1)]=42 (x-2)(x-3)+2(x+6)(x-5)-3(x^2-7x+13) (X-2)(X-3)+2(X+6)(X-5)-3(X^2+7X+13) 计算(x-2)(x-3)+2(x+6)(x-5)-3(x平方-7x+13) (3x-2)(x-3)-2(x+6)(x-5)+3x(-7x+13) (2x-5)*(2x-5)+(3x+1)(3x+1)>13*(x*x-10)