Question

THU GỌN\(\frac{\left(A+2008\right)!+\left(A+2009\right)!}{\left(A+2008\right)!-\left(A+2009\right)!}\)

Answer 1

Nhớ rằng \(\left(A+2009\right)!=\left(A+2009\right)\left(A+2008\right)!\).

Thu gọn thì được \(P=\frac{1+A+2009}{1-\left(A+2009\right)}=-\frac{A+2010}{A+2008}\)

Answer 2

\(\frac{\left(A+2008\right)+\left(A+2009\right)}{\left(A+2008\right)-\left(A+2009\right)}\)

\(=\frac{2A+4017}{-1}\)

\(=-2A-4017\)