1.38x(1/85+1/47)-47x(1/38-1/85)+85x(1/38-1/47)等于多少?2.（1+1/2)x(1-1/2)x(1+1/3)x(1-1/3)x...x(1+1/99)x(1-1/99)等于多少?

填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x 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 f(x)=[1+x+x^2+x^3+...+x^47]/[1+x+x^2+x^3+...+x^98],求f'(-1) x/x+(1-x)/x-1/x 1.38x(1/85+1/47)-47x(1/38-1/85)+85x(1/38-1/47)等于多少?2.（1+1/2)x(1-1/2)x(1+1/3)x(1-1/3)x...x(1+1/99)x(1-1/99)等于多少? *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 七年级下册政治复习提纲(山东人民出版社)第五单元是 青春的脚步 青春的气息别弄错了啊!格式：X X X X X X X X X 1、X X X X X X X X X X.2、X X X X X X X X X.3、X X X X X X X X X X X. (x+1)(x-1)(x-x+1)(x+x+1) 分解因式----（X*X-X)(X*X-X-2)+1 X(X-1)=X 1.1/x|x/(x+1)| 23X +40=21X 设随身听4X-8,书包为X x-15%x=4250 13+X=2/1(47+x) x(1+15%)x90%-x=7 (1)14x^2-45x-14 (2)18x^2+3x-10 (3)8x^2-18x+9 (4)10x ^2-11x-6 (5)15x^2-47x+28 （6）x^2-17x+10(1)14x^2-45x-14 (2)18x^2+3x-10 (3)8x^2-18x+9 (4)10x ^2-11x-6 (5)15x^2-47x+28（6）x^2-17x+10 （7）12x^2-x-6 （8）24x^2-2x-15 因式分解 x+1/x=3, (x^3+1/x^3)(x+1/x)=(x^4+1/x^4)+(x^2+1/x^2)=x^4+1/x^4+7=54 x^4+1/x^4=47 54是怎么得来x+1/x=3,(x^3+1/x^3)(x+1/x)=(x^4+1/x^4)+(x^2+1/x^2)=x^4+1/x^4+7=54x^4+1/x^4=4754是怎么得来的呢? x/x-1[1+(x-1/x)] x-1/x÷(x-1/x) 】x(x+1)+x^2(x-1) 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