x^4·x^2n-1=
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x^4·x^2n-1=
x^4·x^2n-1=
x^4·x^2n-1=
x^2n 1
(8x^n+1-3x^n-1)-2(-x+9x^n+1-4x^n)=
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x^4·x^2n-1=
解方程(2n+4)(x-n-1)-x=x(x-n-1)x为未知数
设x^2n=3,求(1/3x^3n)·[4(x^5)^n]急
(-x^2n-2)(-x)^5÷[x^n+1·x^n`(-x)]
(x^4n+16)(x^n-2)(x^2n+4)(x^n+2)=
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x^n-1(3x^n+4x^n+1-5x^n+2)
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(-x^2n-2)*(-x)^5÷[x^n+1*x^n*(-x)]=?
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