x^2+1/x^2-4(x+1/x)+6=0要过程哦,谢谢啦,各位帅哥美女,大哥大姐,帮帮忙忙啦,快哦
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x^2+1/x^2-4(x+1/x)+6=0要过程哦,谢谢啦,各位帅哥美女,大哥大姐,帮帮忙忙啦,快哦x^2+1/x^2-4(x+1/x)+6=0要过程哦,谢谢啦,各位帅哥美女,大哥大姐,帮帮忙忙啦,
x^2+1/x^2-4(x+1/x)+6=0要过程哦,谢谢啦,各位帅哥美女,大哥大姐,帮帮忙忙啦,快哦
x^2+1/x^2-4(x+1/x)+6=0
要过程哦,谢谢啦,各位帅哥美女,大哥大姐,帮帮忙忙啦,快哦
x^2+1/x^2-4(x+1/x)+6=0要过程哦,谢谢啦,各位帅哥美女,大哥大姐,帮帮忙忙啦,快哦
X²+1/X²-4(x+1/x)+6=0
X²+1/X²+2X²/X²-4(X+1/X)+4=0
(X+1/X)²-4(X+1/X)+4=0
(X + 1/X -2)²=0
X+1/X=2
解得X=1
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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
x^6-x^5+x^4-x^2+x-1
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
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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
1/(1-x)+1/(1+x)+2/(1+x*x)+4/(1+x*x*x*x)+8/(1-x*x*x*x*x*x*x*x)怎么做
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
计算:[(x^2 - 4)/(x^2 - x - 6) + (x+2)/(x-3)] / (x+1)/(x-3)
(x/x-2)+(2/x*2+2x)-(x+6/x*2-4)化简,=x^2/x(x-2)+(2x-4)/x(x^2-4)-(x^2+6x)/x(x^2-4)=x^2/x(x-2)-(x+2)/x(x-2)=(x-2)(x+1)/x(x-2)=(x+1)/x
(x-1)/(x+3x+2)+6/(2+x-x)-(10-x)/(4-x)
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
(x+1-1/1-x)÷(x-x²/x-1) (x-4/x-x-6+ x+2/x-3)÷x+1/x-3
1.用公式计算:COSX=1-X*X/2!X*X*X*X/4!-X*X*X*X*X*X/6!.直到最后一项的绝对
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
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x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,