[(1+50%)x+(1+40%)(360-x)]80%-360=56求x

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[(1+50%)x+(1+40%)*(360-x)]*80%-360=56求x
[(1+50%)x+(1+40%)*(360-x)]*80%-360=56求x

[(1+50%)x+(1+40%)*(360-x)]*80%-360=56求x
[(1+50%)x+(1+40%)*(360-x)]*80%-360=56
[1.5x+1.4*(360-x)]*0.8=416
(1.5x+504-1.4x)*0.8=416
0.1x+504=520
0.1x=16
x=160

x{x+1}{x-1}}x-2}{x-3}-40 x-1)(X-2)(x-3)...(x-50)+x(x-2)(X-3)...(X-50)+...+x(x-1)(x-2)...(x-49)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 || x{x+1}{x-2}{x-3}-40 分解因式:x(x-1)(x+2)(x+3)-40 (x+1)+(x+2)+(X+3).+(x+50)=1325 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 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-3/-/X-1/ (3x/x-1) x-3(x-1) | X+1 |>| X-3 | x+3/x-1 (x +1)(x-3) (x+3)(x-1) |x+1|-|x-3| (x+1)(x-3) 求几道解方程数学题60%x+25=40 x+30%x=52 19-120%x=7 x-10%x=18 (1-25%)x=362x+30%x=9.260%x+90=102 x-20%=5.2 50%x+3x=28 9.1-14%x=0.7