Zadanie 2: Oblicz wartość liczbową wyrażenia
[tex]2a {}^{3} - 4a {}^{2} + 7[/tex]
dla a= -3
[tex]2a {}^{3} - 4a {}^{2} + 7[/tex]
dla a= -3
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Verified answer
Odpowiedź:
[tex]a=-3\\2a^{3} -4a^{2} +7\\2\cdot(-3)^3-4\cdot(-3)^2+7=2\cdot(-27)-4\cdot9+7=-54-36+7=-83[/tex]