Question

so nguyen x thoa man

3.3².3³.3⁴....3^x=3¹⁹⁰

 

Answer 1

=>3^{(1+2+3+4+.........+x)}=3¹⁹⁰

=>1+2+3+4+.......+x=190

=>\(\frac{x.\left(x+1\right)}{2}\)=190

=>x.(x+1)=190.2=380

=>x=19

Answer 2

19

Tik cho mk nha..........cảm ơn rất nhiều