Question

ma poate ajuta cineva la exercitiul acesta punctele b, d, e si f?

Answer 1

b)

2^29 + 2^27 - 2^26 = 2^26 (2^3 + 2 -1) = 9 x 2^26 = 9 x (2^2)^13 = 9 x 4^13

d)

49^11 : 7^11 + 7^13 : 7 = (7^2)^11 : 7^11 + 7^12 = 7^22 : 7^11 + 7^12  = 7^11 + 7^12 = (1+7) x 7^11 = 8 x 7^11

f)

3x6^2008 - 2^2007 x 3^2007 - 5 x 6^2006 = 3x6^2008 - 6^2007 - 5 x 6^2006 = 6^2006 x (3 x 6^2 - 6 - 5) =  6^2006 x (3x36 -6-5) = 6^2006 x (108-11) = 97 x 6^2006

e)

7x4^23 - 9 x 4^22 = 4^22 x (7x4 - 9) = 4^22 x (28-9) = 19 x 4^22