1.(x²+x)²-(x+1)² 2.2002²-2001*20033.(2+1)(2²+1)(2的四次方+1)...(2的2n次方+1)

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1.(x²+x)²-(x+1)² 2.2002²-2001*20033.(2+1)(2²+1)(2的四次方+1)...(2的2n次方+1)

1.(x²+x)²-(x+1)² 2.2002²-2001*20033.(2+1)(2²+1)(2的四次方+1)...(2的2n次方+1)
1.(x²+x)²-(x+1)² 2.2002²-2001*2003
3.(2+1)(2²+1)(2的四次方+1)...(2的2n次方+1)

1.(x²+x)²-(x+1)² 2.2002²-2001*20033.(2+1)(2²+1)(2的四次方+1)...(2的2n次方+1)
1.x2+x)2-(x+1)2
=【x(x+1)】²-(x+1)²
=x²(x+1)²-(x+1)²
=(x+1)²(x²-1)
=(x+1)²(x+1)(x-1)
2.,20022-2001*2003
=(2001+1)(2003-1)-2001*2003
=2001*2003+2001+2003+1-2001*2003
=2001+2003+1
3.(2-1)(2+1)(2^2+1)(2^4+1).(2^(2n)+1)
=(2^2-1)(2^2+1)(2^4+1).(2^(2n)+1)
=(2^4-1)(2^4+1).(2^(2n)+1)
=[2^(2n)-1][2^(2n)+1]
=2^(4n)-1