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scrieti ca fractie:


Scrieti Ca Fractie class=

Răspuns :

(2¹¹-2⁹)/2¹²+(5⁵⁰-5³⁸)/5³⁹=

2⁹(4-1)/2¹²+5³⁸(5¹²-1)/5³⁹=

3/2³+(5¹²-1)/5=3/8+(5¹²-1)/5=

[15+8(5¹²-1)]/40=

(15+8×5¹²-8)/40=

(7+8×5¹²)/40