1 6x^3+11x^2-7x-152 (x^2+1)^2-x^2+x(x-2)(x^2+x+1)

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1 6x^3+11x^2-7x-152 (x^2+1)^2-x^2+x(x-2)(x^2+x+1)
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1 6x^3+11x^2-7x-152 (x^2+1)^2-x^2+x(x-2)(x^2+x+1)
1 6x^3+11x^2-7x-15
2 (x^2+1)^2-x^2+x(x-2)(x^2+x+1)

1 6x^3+11x^2-7x-152 (x^2+1)^2-x^2+x(x-2)(x^2+x+1)
1 6x^3+11x^2-7x-15
=(2x+3)(3x^2+x-5)
2 (x^2+1)^2-x^2+x(x-2)(x^2+x+1)
=(x^2+1+x)(x^2+1-x)+(x^2-2x)(x^2+x+1)
=(x^2+x+1)(2x^2-3x+1)
=(x^2+x+1)(2x-1)(x-1)

6x^3+11x^2-7x-15
=6x³+2x²-10x+9x²+3x-15
=2x(3x²+x-5)+3(3x²+x-5)
=(2x+3)(3x^2+x-5)
2 (x^2+1)^2-x^2+x(x-2)(x^2+x+1
=(x^2+1+x)(x^2+1-x)+x(x-2)(x^2+x+1)
=(x^2+1+x)(x^2+1-x+x²-2x)
=(x^2+1+x)(2x²-3x+1)
=(x^2+1+x)(2x-1)(x-1)

1.原式= 6x^3+11x^2-7x-15
=6x³+2x²-10x+9x²+3x-15
=2x(3x²+x-5)+3(3x²+x-5)
=(2x+3)(3x^2+x-5)
2.原式=(x^2+1)^2-x^2+x(x-2)(x^2+x+1)
=(x^2+1+...

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1.原式= 6x^3+11x^2-7x-15
=6x³+2x²-10x+9x²+3x-15
=2x(3x²+x-5)+3(3x²+x-5)
=(2x+3)(3x^2+x-5)
2.原式=(x^2+1)^2-x^2+x(x-2)(x^2+x+1)
=(x^2+1+x)(x^2+1-x)+x(x-2)(x^2+x+1)
=(x^2+1+x)(x^2+1-x+x²-2x)
=(x^2+1+x)(2x^2-3x+1)
=(x^2+1+x)(2x-1)(x-1)

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原式= 6x^3+11x^2-7x-15
=6x³+2x²-10x+9x²+3x-15
=2x(3x²+x-5)+3(3x²+x-5)
=(2x+3)(3x^2+x-5)
原式=(x^2+1)^2-x^2+x(x-2)(x^2+x+1)
=(x^2+1+x)(x...

全部展开

原式= 6x^3+11x^2-7x-15
=6x³+2x²-10x+9x²+3x-15
=2x(3x²+x-5)+3(3x²+x-5)
=(2x+3)(3x^2+x-5)
原式=(x^2+1)^2-x^2+x(x-2)(x^2+x+1)
=(x^2+1+x)(x^2+1-x)+x(x-2)(x^2+x+1)
=(x^2+1+x)(x^2+1-x+x²-2x)
=(x^2+1+x)(2x^2-3x+1)
=(x^2+1+x)(2x-1)(x-1)
应该就是这样的吧,如果不懂的话,可以来问我,,

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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 6x^3+11x^2-7x-152 (x^2+1)^2-x^2+x(x-2)(x^2+x+1) 1 6x^3+11x^2-7x-152 (x^2+1)^2-x^2+x(x-2)(x^2+x+1) 1 6x^3+11x^2-7x-152 (x^2+1)^2-x^2+x(x-2)(x^2+x+1) 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 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? 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 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 x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=? matlab解决约束非线性规划问题myfun.mfunction f=myfun(x)f=x(1)*x(13)+x(2)*x(14)+x(3)*x(15)+x(25)+1.697*(x(4)*x(16)+...x(5)*x(17)+x(6)*x(18)+x(26))+0.575*(x(7)*x(19)+x(8)*x(20)...+x(9)*x(21)+x(27))+0.723*(x(10)*x(22)+x(11)*x(23)+x(12)*x(24)); matlab解决约束非线性规划问题myfun.mfunction f=myfun(x)f=x(1)*x(13)+x(2)*x(14)+x(3)*x(15)+x(25)+1.697*(x(4)*x(16)+...x(5)*x(17)+x(6)*x(18)+x(26))+0.575*(x(7)*x(19)+x(8)*x(20)...+x(9)*x(21)+x(27))+0.723*(x(10)*x(22)+x(11)*x(23)+x(12)*x(24)); 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 解分式方程:1/X-2+1/X-6=1/X-7+1/X-11/X-2+1/X-6=1/X-7+1/X-11/(x-2)-1/(x-1)=1/(x-7)-1/(x-6)(x-1-x+2)/(x-2)(x-1)=(x-6-x+7)/(x-7)(x-6)1/(x-2)(x-1)=1/(x-7)(x-6)(x-2)(x-1)=(x-7)(x-6)x^2-3x+2=x^2-13x+4213x-3x=42-210x=40x=4 为什么要移向才能解 [(1+x)^20+(1+x)^19+(1+x)^18+(1+x)^17+(1+x)^16+(1+x)^15+(1+x)^14+(1+x)^13+(1+x)^12+(1+x)^11+(1+x)^10+(1+x)^ 9+(1+x)^8+(1+x)^7+(1+x)^6+(1+x)^5+(1+x)^4+(1+x)^3+(1+x)^2+(1+x)]=28.51