(1//100-1)X(1/101-1)X(1/102-1)X……X(1/2013-1)
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(1//100-1)X(1/101-1)X(1/102-1)X……X(1/2013-1)
(1//100-1)X(1/101-1)X(1/102-1)X……X(1/2013-1)
(1//100-1)X(1/101-1)X(1/102-1)X……X(1/2013-1)
[x(x+1)+x平方(x-1)]+(-3x)
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若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)
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
请问这道题咋做 :(x)X (x+1) X (x+2) X (x+3) =360
已知x除以(x*x-x+1)=7,求x*x除以(x*x*x*x+x*x+1)的值
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(x+1)X百分之三十+(100-X)X百分之二十五=2/5X
1/(x+1)(x+2)+1/(x+2)(x+3)+1/(x+3)(x+4)+...+1/(x+100)(x+101)
(1+1/x)x^
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x(x+1)-(x-12)(x+12)
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(x+1)(x+2)
x+(x+1)/3
x^2(1-x)