Răspuns :
3×3³×3⁵×3⁷×....3²⁵=3¹³ˣ
1+3+5+7+...25=13²=169
formula este 1+3+5+ ...+ (2n-1) =n² in cazul nostru 2n-1=25 n=13
3¹⁶⁹=3¹³ˣ
169=13x
x=13
1+3+5+7+...25=13²=169
formula este 1+3+5+ ...+ (2n-1) =n² in cazul nostru 2n-1=25 n=13
3¹⁶⁹=3¹³ˣ
169=13x
x=13
aduna puterile
1+3+5+7+9+11+13+15+17+19+21+23+25=169
3^13x
13*13=169
x=13
1+3+5+7+9+11+13+15+17+19+21+23+25=169
3^13x
13*13=169
x=13