一个数学问题(初2)

98765432＾2比上98765431＾2＋ 98765433＾2－2
=98765432＾2比上(98765431＾2-1)+(98765433＾2－1)
=98765432＾2比上(98765432*98765430)+ (98765434*98765434)
=98765432＾2比上98765432*(98765430+98765434)
=98765432＾2比上2*98765432＾2
=1/2

初2有因式分解么？？

=98765432^2\98765432^2(1-2)
=-(1比1)

将 98765431＾2＋ 98765433＾2－2 转化为
(98765432-1)＾2+(98765432+1)＾2－2 可得

98765432＾2+1-2*98765432+98765432＾2+1+2*98765432 即
98765432＾2+98765432＾2 结果
2

设98765432为A 则原式为:A`2/(A+1)`2+(A-1)`2-2
=A`2/2A`2
=1/2

1:2