1(x+1)(x^2+1)(x-1)(x^4+1)
=(x^2-12)(x^2+1)(x^4+1)
=[(x^2)2-(12)2](x^4+1)
=(x^4-1)(x^4+1)
=(x^4)2-1
=x^8-1
2 x^2-y^2=24
(x+y)(x-y)=24
∵x+y=6
∴6(x-y)=24
∴ (x-y)=24÷6
=4
3 有,得到的矩形面积比正方形面积小1
4 a=2009^2-(2010x2008)
=2009^2-(2009+1)(2009-1)
=2009^2-(2009^2-1)
=2009^2-2009^2+1
=1
5 不懂,应该是题目有问题.
题目如果是
(2-1)(2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)+1
=(2^2-1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)+1
=(2^4-1)(2^4+1)(2^8+1)(2^16+1)(2^32+1)+1
=(2^8-1)(2^8+1)(2^16+1)(2^32+1)+1
=(2^16-1)(2^16+1)(2^32+1)+1
= (2^32-1)(2^32+1)+1
=(2^64-1)+1
=2^64