zadanie 1 :5(5y3+ 6y2+ 7y) = zadanie 2 :8(3z2–6z + 5) = zadanie 3:1/4(4a2–8a –2) = zadanie 4 :-4(6t2+ 2t + 8) = zadanie 5 :-0,6(10c3–5c2+ 4) = zadanie 6 :-1/3(6w2–3w–3/5) =