来自万享的问题
化为最简分式.X2-(Y-Z)2----------------(X+Y)2-Z2
化为最简分式.
X2-(Y-Z)2
----------------
(X+Y)2-Z2
1回答
2020-10-09 23:02
化为最简分式.X2-(Y-Z)2----------------(X+Y)2-Z2
化为最简分式.
X2-(Y-Z)2
----------------
(X+Y)2-Z2
=(x-y+z)(x+y-z)/(x+y-z)(x+y+z)=(x-y+z)/(x+y+z)