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obliczamy krawędź podstawy:
4 do 2 + 3 do 2= x do 2
16+9=x do 2
x=25 do 2
x= 5
( do 2 oznacza do 2 potęgi)
4+3+5+3+3+3=21
b:
4*2 pierwiastek z 2+3+3+3= 8 pierwiastków z 2+9