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b)-3v9-5v3 (to trzeciego stopnia pierwiastki)
c v11+8v11 (drugi 3 st)
d-6v14+12-2v14=-8v14+12
e)2v13+2v3-4v13+12=2v3-2v13+12
f)-v2+2v6+15v2+3v6=14v2+5v6 (tu v 3 st)