Question

tinh gia tri :

A = \(\frac{2009.2010-2}{2008+2008.2010}\) ;  B = \(\frac{-2009.20102010}{20092009.2010}\)

 

Answer 1

A=\(\frac{2009.2010-2}{2008+2008.2010}\)=\(\frac{\left(2008+1\right).2010-2}{2008+2008.2010}\)

A=\(\frac{2008.2010+2010-2}{2008+2008.2010}\)=\(\frac{2008.2010+2008}{2008+2008.2010}\)=1

Ta có;

B=\(\frac{-2009.20102010}{20092009.2010}\)=\(\frac{-2009.2010.10001}{2009.10001.2010}\)=-1

Vậy A+B=1+(-1)=0

Answer 2

robert lewandoski copy bài vì bài đâu có hỏi A+B

ai đồng ý thì l-i-k-e