4x-1/(x+2)(x-2)=A/x+2+x/x-1,则A=( )
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4x-1/(x+2)(x-2)=A/x+2+x/x-1,则A=( )
4x-1/(x+2)(x-2)=A/x+2+x/x-1,则A=( )
4x-1/(x+2)(x-2)=A/x+2+x/x-1,则A=( )
两边同乘以x+2,令x=-2,得
A=(-8-1)/(-2-2)=9/4
a+x/x+1 ,x/x^2-2x-3 ,a/x^2+4x+3
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若f(x)={a'x(x>1),(4-a/2)x+2(x
已知集合A={x|(x-2)*(x+1)>0},B={x|4x+a
一个“整式的乘法”的问题请先阅读下列解题过程,再仿做下面的问题.已知X*X + X - 1=0,求X*X*X + 2*X*X + 3的值.解X*X*X + 2X*X +3=X*X*X +X*X -X +X*X +X +3=X{X*X +X -1} +X*X +X -1 +4=0+0+4=4+ x + X*X + X*X*X=0.+ X*X + X*X*X
4x+1/(x-2)(x-5)=a/x-2+b/x-5
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(x-3/x-2)-(x-2/x-1)=(x-5/x4) -(x-4/x-3)
x(x+1)+(x+2)+(x+3)+(x+4)+(x+5) = 27求x
4x-1/(x+2)(x-2)=A/x+2+x/x-1,则A=( )
已知A={X|X^-X-2>0}B={X|X^+4X-P
x^2-6x+5= A(x-2)(x-3)B(x-6)(x+1)
已知f(x+1)=x²-2x,则f(x)= A.x²-4x+3 B.x²-4x C已知f(x+1)=x²-2x,则f(x)=A.x²-4x+3 B.x²-4x C.x²-2x+1 D.x²-2x
解方程(x/x(x+2))+(x/(x+2)(x+4))+.+x/(x+8)(x+10)=1
X+X+X+(X-1)+(X-2)+(X-3)+(X-4)=10(X-3)+(X-4)
x+2/x+1-x+4/x+3=x+6/x+5-x+8/x+7 x=?
x^4+x^3+x^2+x+1=0,x^2006+x^2005+x^2004+x^2003+x^2002