(x+1)(x+3)(x+5)(x+7)-9怎么因式分解啊

来源：学生作业帮助网编辑：六六作业网时间：2024/12/19 18:46:48

(x+1)(x+3)(x+5)(x+7)-9怎么因式分解啊(x+1)(x+3)(x+5)(x+7)-9怎么因式分解啊(x+1)(x+3)(x+5)(x+7)-9怎么因式分解啊(x+1)(x+3)(x+

(x+1)(x+3)(x+5)(x+7)-9怎么因式分解啊
(x+1)(x+3)(x+5)(x+7)-9怎么因式分解啊

(x+1)(x+3)(x+5)(x+7)-9怎么因式分解啊
(x+1)(x+3)(x+5)(x+7)-9
=[(x+1)(x+7)][(x+3)(x+5)]-9
=(x^2+8x+7)(x^2+8x+15)-9
=(x^2+8x+7)[(x^2+8x+7)+8]-9
=(x^2+8x+7)^2+8(x^2+8x+7)-9
=[(x^2+8x+7)+3][(x^2+8x+7)+5]
=(x^2+8x+10)(x^2+8x+12)
=(x^2+8x+10)(x+2)(x+6)

(X+1)(X+3)(X+5)(X+7)-9
=(x+1)(x+7)(x+3)(x+5)-9
=(x^2+8x+7)(x^2+8x+15)-9
令x^2+8x+7=t
(X+1)(X+3)(X+5)(X+7)-9
=(x+1)(x+7)(x+3)(x+5)-9
=(x^2+8x+7)(x^2+8x+15)-9
=t(t+8)-9=t^2+8t-9=(t+9)(t-1)
=(x^2+8x+7+9)(x^2+8x+7-1)
=(x^2+8x+16)(x^2+8x+6)
=(x+4)^2*(x^2+8x+6)

(x+1)(x+3)(x+5)(x+7)=x^4+16x^3+86x^2+176x+105
(x+1)(x+3)(x+5)(x+7)-9=x^4+16x^3+86x^2+176x+96
=(x^2+8x+6)(x-4)^2

x+1)(x+3)(x+5)(x+7)-9怎么因式分解啊
(x+1)(x+3)(x+5)(x+7)-9
=[(x+1)(x+7)][(x+3)(x+5)]-9
=(x^2+8x+7)(x^2+8x+15)-9
=(x^2+8x+7)[(x^2+8x+7)+8]-9
=(x^2+8x+7)^2+8(x^2+8x+7)-9
=[(x^2+8x+7)+3][(x^2+8x+7)+5]
=(x^2+8x+10)(x^2+8x+12)
=(x^2+8x+10)(x+2)(x+6)

*-----------------------------------------------*| 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 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 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 如下9*9宫图如何填x x x 1 x x x 2 9x x 5 x x x x x 4x 6 8 x x x x x xx x x 7 x x 5 x xx 2 x x 6 x x 8 xx x 3 x x 9 x x xx x x x 5 x 1 6 x 4 x x x 3 x x x x 7 x x x x 2 x x x 解九宫格题目（X为未知数）9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 已知3x*x-x=1,求6x*x*x+7x*x-5x+2000 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? 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!)+. [(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)] 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) 解决数独问题x 1 x 7 x x x 3 xx x x x 4 x 2 x x9 x 3 6 x 8 7 x 58 x x x x 9 x x xx x 2 x 5 x x x 4x 3 x x x x 6 x xx x x x x x x x 26 x x x x x x x 7x 5 4 1 7 x 9 8 x这道题我用了很多办法都没有头绪,请帮忙的朋友把解题的思因式分解(x+1)(x+3)(x+5)(x+7)-12 因式分解 (x+1)(x+3)(x+5)(x+7)+15 (x+1)（x+3)(x+5)(x+7)+15因式分解 (x-1)(x-3)(x-5)(x-7)-84因式分解 (x-7)(x+3)+(x-1)(x+5)=102 (x-1)(x-3)(x-5)(x-7)-9 因式分解