数学思维3X+(5X+1500)+(7X+1500)+(6X+1500)+(7X+1500)+(7X+1500)+(7X+1500)=22000

数学思维3X+(5X+1500)+(7X+1500)+(6X+1500)+(7X+1500)+(7X+1500)+(7X+1500)=22000 *-----------------------------------------------*| 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 || 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 一道数学分式方程(x-4)/(x-3)-(x-6)/(x-5)=(x-8)/(x-7)-(x-10)/(x-9) 用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+. 初一数学3x+5=7x 数学题目：x^5-x 初一数学x^2+x-3因式分解数学求的是思维,是创造性,是培养人的,而不是为了得分. 【数学】x∈R 比较2x^-7x+2 与 x^-5x 的大小 大学数学求极限,f(x)=x+1(x>=3),7-x(x 分式方程【初二数学】x+5/x²-x + 6/1-x =3/x 数学f(x)=x(x+1)(x+2)(x+3)(x+4)(x+5),求f'(0)=? 数学化简3x-x^2/5x+4 x 18/4x-12(3x-x^2)/(5x+4) x 18/(4x-12) 求一个数独答案X X X 9 X X X 8 2 X 6 3 X X 1 4 X 99 X 8 X X X X X XX X X 6 7 X 3 X XX 4 6 X 5 X 2 9 XX X 7 X 2 3 X X XX X X X X X 7 X 17 X 4 3 X X 6 2 X6 3 X X X 7 X X X 数学 x²+14x+2=0x²+4x-3=03x²-4x-7=0x²-5x=63x²+10x+3=0 4x-7=9 用天平思维怎么算 数学(X+1)(X+2)(X+3)(X+4)-120 难倒爱因斯坦的九宫格X 7 X | X 8 1 | X X X |X X X | X 4 X | 7 5 9 |X X 5 | 7 X 9 | X 1 4 |5 X X | X X 8 | 3 9 X |3 9 6 | 4 X 7 | X X 2 |X 8 7 | 9 X X | X X X |4 X X | 6 X 5 | X X X | X X 4 | X X 1 |2 X X | X X X | X X X | X 3 X | X X X |X 6