Question

10^x+20^x/1+2^x=100 qual o valor de x????

Answer 1

$10^x+20^x=100\\ 1+2^x\\\\ 10^x+2.10^x=10^2\\ 1+2^x\\\\ x+x=2\\ x\\\\ x=2$

Espero ter ajudado, bons estudos