Question

化简:(e分之e²+1)²-(e分之e²-1)²

Answer 1

原式=[e+(1/e)]²-[e-(1/e)]²

=[e+(1/e)+e-(1/e)]*[e+(1/e)-e+(1/e)]

=2e*(2/e)

=4

Answer 2

根据平方差公式，原式可化为
[(e2+1)/e +(e2-1)/e] * [(e2+1)/e -(e2-1)/e]
化简为
(2e2/e) * (2/e)
= 4e2/e2
=4