(x^2+1)-7(x^2+1)+10 (x^2+5x)(x^2+5x-2)-24 (a+1)^2+2(a+1)-8

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(x^2+1)-7(x^2+1)+10 (x^2+5x)(x^2+5x-2)-24 (a+1)^2+2(a+1)-8
(x^2+1)-7(x^2+1)+10 (x^2+5x)(x^2+5x-2)-24 (a+1)^2+2(a+1)-8

(x^2+1)-7(x^2+1)+10 (x^2+5x)(x^2+5x-2)-24 (a+1)^2+2(a+1)-8
(x^2+1)-7(x^2+1)+10
=(x²+1-2)(x²+1-5)
=(x²-1)(x²-4)
=(x-1)(x+1)(x-2)(x+2)
(x^2+5x)(x^2+5x-2)-24
=(x²+5x)²-2(x²+5x)-24
=(x²+5x-6)(x²+5x+4)
=(x+6)(x-1)(x+1)(x+4)
(a+1)^2+2(a+1)-8
=(a+1+4)(a+1-2)
=(a+5)(a-1)

1)(x^2+1)-7(x^2+1)+10
=[(x^2+1)-2][(x^2+1)-5]
=(x^2-1)(x^2-4)
=(x-1)(x+1)(x-2)(x+2)
2)(x^2+5x)(x^2+5x-2)-24
=(x^2+5x)^2-2(x^2+5x)-24
=[(x^2+5x)+4][(x^2+5x-6]
=(x+1)(x+4)(x-1)(x+6)
3)(a+1)^2+2(a+1)-8
=[(a+1)-2][(a+1)+4]
=(a-1)(a+5)

(x^2+1)-7(x^2+1)+10
=(x²+1-2)(x²+1-5)
=(x+1)(x-1)(x+2)(x-2)
(x^2+5x)(x^2+5x-2)-24
=(x²+5x)²-2(x²+5x)-24
=(x²+5x-6)(x²+5x+4)
=(x-1)(x+6)(x+1)(x+4)
(a+1)^2+2(a+1)-8
=(a+1+4)(a+1-2)
=(a+5)(a-1)

貌似式子中(x^2+1)-7(x^2+1)+10 第一个括号少了个平方哈!
应该是:(x^2+1)²-7(x^2+1)+10 !
如果是,解题如下:
(x^2+1)-7(x^2+1)+10
=[(x²+1) - 2]*[(x²+1)-5]
=(x²-1)(x²-4)
=(x+1)(x-1)(x+2)...

全部展开

貌似式子中(x^2+1)-7(x^2+1)+10 第一个括号少了个平方哈!
应该是:(x^2+1)²-7(x^2+1)+10 !
如果是,解题如下:
(x^2+1)-7(x^2+1)+10
=[(x²+1) - 2]*[(x²+1)-5]
=(x²-1)(x²-4)
=(x+1)(x-1)(x+2)(x-2)
(x^2+5x)(x^2+5x-2)-24
=(x²+5x)²-2(x²+5x)-24
=[(x²+5x)-6]*[(x²+5x)+4]
=(x²+5x-6)(x²+5x+4)
=(x-1)(x+6)(x+1)(x+4)
(a+1)^2+2(a+1)-8
=[(a+1)-2]*[(a+1)+4]
=(a-1)(a+5)

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*-----------------------------------------------*| 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 1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11+x^12=97.8 好多年没有用过过数学公式了 想不起来怎么算了 想知道 X值是多少 已知x=2π+1求 |x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|+|x-7|+|x-8|+|x-9|+|x-10| 已知x=2π+1.求(X-1)+(X-2)+(X-3)+(X-4)+(X-5)+(X-6)+(X-7)+(X-8)+(X-9)+(X-10) 1+x+x^2+x^3+x^4+x^5+x^6+x^7+x^8+x^9+x^10+x^11=17.7这个方程怎么样求解? X+7/X+1+X+8/X+2-X+9/X+3-X+10/X+4 的解法 x/x-2+x-9/x-7=x+1/x-1+x-8/x-6, x/x-2+x-9/x-7=x+1/x-1+x-8/x-6, 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 1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550必须用解方程 x+10/x^2-4-x^2+2x+1/x^2-x-2+6x^2+7x+2/3x^2+8x+4 1/(x+1)(x+2)+1/(x+3)(x+4)+1/(x+5)(x+6)+1/(x+7)(x+8)+1/(x+9)(x+10)怎么解 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 1x()+2x()+3x()+4x()+5x()+6x()+7x()+8x()加9x()+10x()=1980 1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少 |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|的最小值谢谢了,大神帮忙啊如题 |x-1|+|x-2|+|x-3|+|x-4|+|x-5|+|x-6|+|x-7|+|x-8|+|x-9|+|x-10|的最小值 这类题该怎入手