Question

Упростите:
5с-с^2/с^2-25

Answer 1

$frac{5c-c^2}{c^2-25} = frac{c(5-c)}{(c-5)(c+5)}= frac{c(-(c-5))}{(c-5)(c+5)} = frac{c(-1)}{c+5}=- frac{c}{c+5}$