Question

stabiliti valoarea de adevar a propozitiilor (2 la puterea 11 x 7 la puterea 5 + 2 la puterea 8 x 7 la puterea 5) divizibil cu 9 ajutati-ma plsss

Answer 1

 [tex](2^{11}*7^5+2^8*7^5)\,\vdots\,9 ?\\ \downarrow\\ 2^8*7^5*(2^3+1)=2^8*7^5*9\;\vdots\;9[/tex]