b= (7 - 11°) : 3² + (3²*2)/(5-9) ° - do potęgi zerowej :D Thanks from the moutains za odpowiedź ;D :P

b = - 25/6

b= (7 - 11°) : 3² + (3²*2)/(5-9) b=(7-1) : 9 + (9*2) / (-4) = = 6 : 9 + 18/-4 = =2/3 - 9/2 = = 4/6 - 27/6 = = -23/6 = -3 i 5/6

(7-1):9+(9*2)/(-4)=(6:9)+18/(-4)=0.6+4.5=5.1