1.x²-1=(x-1)(x+1) ∴x²-1/x+1=________
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1.x²-1=(x-1)(x+1) ∴x²-1/x+1=________
2.x³-1=(x-1)(x²+x+1) ∴x³-1/x²+x+1=_________
3.xˇ4-1=(x-1( )∴xˇ4-1/xˇ3+x²+x+1=x-1
4.猜想:xˇn-1=(x-1)( ),∴xˇn-1/( )=x-1
如果要计算2ˇ10+2ˇ9+······+1的值,你能用一个两项式表达2ˇ10+2ˇ9+······+1的值吗?
2.x³-1=(x-1)(x²+x+1) ∴x³-1/x²+x+1=_________
3.xˇ4-1=(x-1( )∴xˇ4-1/xˇ3+x²+x+1=x-1
4.猜想:xˇn-1=(x-1)( ),∴xˇn-1/( )=x-1
如果要计算2ˇ10+2ˇ9+······+1的值,你能用一个两项式表达2ˇ10+2ˇ9+······+1的值吗?
1.x-1
2.x-1
3.x的三次+x²+x+1
4.(x的n次+x的n-1次+……+1)
(x的n次+x的n-1次+……+1)
5.2ˇ10+2ˇ9+······+1
=3
2ˇ10+2ˇ9+······+1
=(2-1)(2的10次+2的9次+……+1)
2.x-1
3.x的三次+x²+x+1
4.(x的n次+x的n-1次+……+1)
(x的n次+x的n-1次+……+1)
5.2ˇ10+2ˇ9+······+1
=3
2ˇ10+2ˇ9+······+1
=(2-1)(2的10次+2的9次+……+1)
7/x²+x+3/x²-x=6/x²-1
(x-1)(x²+mx+n)=x²-6x²+11x-6
1 f(x)=(1+x²)/(1-x²)
已知x²-3x+1=0,球(x-1/x)²的值
y=(x²+1)²/[(3x²+2)(2x²+3)],求最小值
F(x)=3x²+2x-1
1.已知 x/x²+x+1=m(m≠0,m≠1/2)求 x²/x四次方+x²+1
计算:[(x²-2x+1)/(x²-1)]÷[(x-1)(x²+x)]-x
2(x²-1²)
已知X²(平方)-X-1=0,则-X²+2X²+2009的值多少,
(1)(x²-2x)²+2(x²-2x)+1
(x²-2x)²+2x²-4x+1