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7/29 b) (1²+2²+3²)⁷:14​

Răspuns :

(1+4+9):14= (5+9):14=14:14= 1

b) (1²+2²+3²)⁷ : 14​ =

= (1+4+9)⁷ : 14

= 14⁷ : 14

= 14⁷⁻¹

[tex]= \bf 14^6[/tex]

unde:

1² = 1 · 1 = 1

2² = 2 · 2 = 4

3² = 3 · 3 = 9

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[tex]\boxed{\boldsymbol{a^{m} \cdot a^{n} = a^{m + n}}; \ \ \ \boldsymbol{a^{m} : a^{n} = a^{m - n}} }[/tex]