Question

Упростите выражение$\frac{c^{2}}{ c^{2}-4 } - \frac{c}{c-2}$

Answer 1

c²/(c-2)(c+2)-c/(c-2)=(c²-c²-2c)(c-2)(c+2)=-2c/(c²-4)

Answer 2

$\frac{ c^{2} }{(c-2)(c+2)}- \frac{c}{c-2}= \frac{c^{2} - c^{2} -2c}{(c+2)(c-2)} = \frac{- 2c}{ c^{2}-4}$