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Ajutor va rog! 
30+5x[40+8x(200:5-72:2)]= 
URGENT!


Răspuns :

30+5(40+8(40-36) =30+5(40+8*4)=30+5(40+32)=30+5*72=30+360=390

30 + 5 x[ 40 + 8x ( 40- 34)] =
30 + 5 x[ 40 + 8x ori 6]=
30 + 5x ori ( 40 + 48x) =
30 + 5x oric40 + 5x ori 48x=
30 + 200x + 240x la putere a 2a