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Daca 2x-3y=5, calculati valoarea numarului:
n=(6x-9y) + (6x-9y)² + (6x-9y)³


Răspuns :

[tex]6x-9y=3(2x-3y)=3*5=15. \\ \\ n=15+ 15^{2} +15^{3} =15+225+3375=3615.[/tex]
3(2x-3y)=3x5=15
(6x-9y)=15
(6x-9y)²=15 la puterea 2=225
(6x-9y)³=15 la puterea 3=3375
(6x-9y) + (6x-9y)² + (6x-9y)³=15+225+3375
(6x-9y) + (6x-9y)² + (6x-9y)³ =3615