С^2-25/с-3:10-2с/с^2-6с+9

Question

С^2-25/с-3:10-2с/с^2-6с+9

Answer 1

(c-5)(c+5)/(c-3) :2(5-c)/(c-3)² = -(5-c)(5+c) *(c-3)² /(c-3)*2(5-c) = -(5+c)(c-3) /2