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(7 - 7y + 14x2 - 35xy) : (-7) = -1 + y - 2x2 + 7xy
dwójka po x to oczywiście oznacza kwadrat
b)
(12ab2 + 9ab3 + 15) : 3 = 4 ab2 + 3ab3 + 5
c)
0,5mn3 (-10 n3 + 4 m2 +1) = -5mn6 + 2 m3n3 + 0,5mn3
:)