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f)10*(3+2)-5*(7-3)=10*5-5*4=50-20=30
g)2*9 [ Do potęgi 2 ] 3*7 [ Do potęgi 2 ]=2*81
3*7 [ Do potęgi 2 ]= 3*49=147
h)2*(5 [ Do potęgi 2 ]- 5 ) :2 [ Do potęgi 2 ]=2*(25-5):2=2*20:2=20
i) 4*3 [ Do potęgi 2 ] +5*2-20:2*3=4*9+10-30=36+10-30=16