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a fost răspuns

DAU COROANA!
simplificati fractia:
2^n×7^n+1+14^n+2-14^n totul supra
2^n+2×7^n+14^n
var rog mult de tot!

Răspuns :

Renatemambouko
(2^n×7^n+1+14^n+2-14^n )/(2^n+2×7^n+14^n)=
=(2^n×7^n+1+2^n+2×7^n+2-2^n×7^n )/(2^n+2×7^n+2^n×7^n)=
=2^n×7^n(7+2^2×7^2-1)/2^n×7^n(2^2+1)=
=(7+4×49-1)/5=
=202/5




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