Question

descoperă numerele înlocuite de steluțe: 9^8=3*, 27*=3^9,​

Answer 1

 

$\displaystyle\bf\\\text{\bf Voi inlocui steluta cu "x".}\\\\a)\\\\9^8=3^x\\\\\Big(3^2\Big)^8=3^x\\\\3^{2\cdot8}=3^x\\3^{16}=3^x\\\boxed{\bf~x=16}\\\\\\b)\\\\27^x=3^9\\\\\Big(3^3\Big)^x=3^9\\\\3^{3x}=3^9\\3x=9\\\\x=\frac{9}{3}\\\\\boxed{\bf~x=3}$