Question

можете просто первый вариант решить

Answer 1

1 ) b.

$a = \sqrt{2007 ^{2} - 2006 \times 2008 } \\ a = \sqrt{2007 ^{2} - 4028048 } \\ a = \sqrt{1} \\ a = 1$

2 ) a.

$a = \sqrt{2008 ^{2} - 2003 \times 2013 } \\ a = \sqrt{2008 ^{2} - 4032039 } \\ a = \sqrt{25} \\ a = 5$

3 ) c.

$a = \sqrt{2009 ^{2} - 2003 \times 2015 } \\ a = \sqrt{2009 ^{2} - 4036045 } \\ a = \sqrt{36} \\ a = 6$