( 5 ĐIỂM)+= +++.7.9(1362.33.4)7 = =212719.7.914.A) (2ĐIỂM) A = ++++272...

Question

5 )5 + + + + = .(5 = .28472513103.( 11 − + − + − + + − = − = =1) 5.. 1. 6 = .(...14c)(1,5điểm) Ta có 20092010 + 20092009= 20092009( 2009 + 1 ) = 20092009. 2010 20102010 = 20102009. 2010 Vì 20092009 < 20102009 => 20092010 + 20092009 < 20102010

Answer

5 )5 + + + + = .(5 = .28472513103.( 11 − + − + − + + − = − = =1) 5.. 1. 6 = .(...14c)(1,5điểm) Ta có 20092010 + 20092009= 20092009( 2009 + 1 ) = 20092009. 2010 20102010 = 20102009. 2010 Vì 20092009 < 20102009 => 20092010 + 20092009 < 20102010

( 5 ĐIỂM)+= +++.7.9(1362.33.4)7 = =212719.7.914.A) (2ĐIỂM) A = ++++272...

5 )

5 + + + + = .(

5

=

.

28

4

7

25

13

10

3

.( 1

1 − + − + − + + − = − = =

1

) 5

.. 1

. 6

= .(

...

14

c)(1,5điểm) Ta có 2009

+ 2009

= 2009

( 2009 + 1 ) = 2009

. 2010

2010

= 2010

. 2010

Vì 2009

< 2010

=> 2009

+ 2009

< 2010

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