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f) (15p^2-9p) /6 - 6*(1-6p)/4= 37,5p^2 - 1,5p (- 6 +36p) /4= 37,5p^2 -1,5p -1,5+ 9p= 37,5p^2+7,5p-1,5
to masz na 1000 % dobrze