14)(3×2^2009) :5×2^2007= SIMPLIFICAM 2^2009 CU 2^2007 SI NE DA 2^2
(3×2^2):5=
(3×4):5=
12:5=2 rest2
15)abcd :bcd =a+1 rest a+2
(1000a×100b×10c×d) : (100b×10c×d)
SIMPLIFICAM
1000a = a+1 rest a+2
a=[(a+1) × (a+2)]: 1000
a=(a^2 +2a ×a+2):1000
a=(3a^2 +2): 1000
a=1000:(3+2)
a=1000:5
a=200
Sper ca te-am ajutat!Succes!
