作业帮1.已知X^6+2X^5+3X^4-8X^3-9X^2-10X+25为完全平方式,用待定系数法,求平方根.2.分解因式:6X^2-7XY+Y^2+8X-3Y+2
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/20 07:42:07
xQMO@;%w,M
K¥`D"6і~Mg !x1&%E'~='TCR ݗ!XR
ۀӅ|
}x^¶Έ<2w yƳ/c:h1$ i)2ŨH$^=]7)/Bl`jj9͇^napS11@pci &X5IwHl"PŸ2?d%6^sGY3B&h=+ U,rܹ 0S5I{fIo+ǥStNM
1.已知X^6+2X^5+3X^4-8X^3-9X^2-10X+25为完全平方式,用待定系数法,求平方根.2.分解因式:6X^2-7XY+Y^2+8X-3Y+2
1.已知X^6+2X^5+3X^4-8X^3-9X^2-10X+25为完全平方式,用待定系数法,求平方根.
2.分解因式:6X^2-7XY+Y^2+8X-3Y+2
1.已知X^6+2X^5+3X^4-8X^3-9X^2-10X+25为完全平方式,用待定系数法,求平方根.2.分解因式:6X^2-7XY+Y^2+8X-3Y+2
1.
设X^6+2X^5+3X^4-8X^3-9X^2-10X+25=(ax^3+bx^2+cx+d)^2
不妨令a=1,
则由五次方系数知b=1
由四次方系数知2c+1=3,知c=1
再由一次方系数知d=-5
其他次方系数可以验证计算的正确性.
2.
6X^2-7XY+Y^2+8X-3Y+2=(6x-y+2)(x-y+1)
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)
*-----------------------------------------------*| 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 ||
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|
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
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^+x^6+x^7+x^8的值
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
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
1.(x*2-3x+3)/(x*2-3x+2)-(x*2-5x+7)/(x*2-5x+6)-1/(x*2-4x+3)2.1/x(x+1)+2/(x+1)(x+3)+3/(x+3)(x+6) 3.已知：x*2-3x+1=0,求x*2+1/x*2.
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
（1） x-3/x-2 - x-5/x-4=x-7/x-6 - x-9/x-8(2) 已知x+3/(x-2)^2=A/x-2 + B/(x-2)^2 ,求A和B的值.
已知x+x^2+x^3+x^4+x^5+x^6=4.4,求x 请解题,
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
(x+3x+5x...+2009x)-(2x+4x+6x+...+2010x)
已知 X=4- 根号3 求 (X*X*X*X-6X*X*X-2X*X+18X+23) / (X*X-8X+15)的值紧急,,明天有用,,
1.(x^3-x^2-4x+1)/(x^2-3x+2)-(x^3-2x^2-9x+21)/（x^2-5x+6）+（x^2-3x+8）/（x^2-4x+3）2.{(x^2)/（x-y)}*{y/(x+y)}-{(x^4y)/(x^4-y^4)}÷{（x^2/x^2+y^2）^2}