42. Si se afle mumărul natural
27
b) 2-42-
4. Vă fau corpana.e urgent

a)3^x×3^(x+1)=27³
3^(2x+1)=3⁹
2x+1=9
2x=9-1
2x=8
x=4
b)(2^x)²×4^(x-2)=8⁴
2^2x2^(2x-4)=2¹²
2^(4x-4)=2¹²
4x-4=12
4x=12+4
4x=16
x=4
#copaceibranly