Упростите: 5c^3-5 (c+1)^2-c ------- = ------------ c+2 13c+26

Question

Упростите:

5c^3-5 (c+1)^2-c

------- = ------------

c+2 13c+26

Answer 1

5(с-1)(с^2+1+c)/(c+2)

(c^2+1+2c-c)/13(c+2)

5(с-1)(с^2+1+c)/(c+2)=(c^2+1+2c-c)/13(c+2)

5(c-1)=1/13

65c-65=1

c=66/65