Question

2011 x 2010 - 1/2009 x 2011 + 2010

Answer 1

`(2011xx2020-1)/(2009xx2011+2010)`

`=((2009+1)xx2011-1)/(2009xx2011+2010)`

`=(2009xx2011+2011-1)/(2009xx2011+2010)`

`=(2009xx2011+2010)/(2009xx2011+2010)`

`=1`

Answer 2

 

\(\dfrac{2011.2010-1}{2009.2011+2010}\) 

= \(\dfrac{2011.2009+2011-1}{2009.2011+2010}\) 

= \(\dfrac{2011.2009+2010}{2009.2011+2010}\) 

= 1