What is the value of X in this Problem ?

[@lucien346]

One only solution is log(phi) such that phi = 1+sqrt(5) / 2

[@GM-mj6nm]

the second root is comlex, but exist

[@ichdu6710]

the division by 1000^x isn't necessary. 1000^x - 100^x - 10^x = 0 there is a common factor which is 10^x 10^x * (10^(2x) - 10^x - 1) = 0 substitute y = 10^x solve the quadratic equation y² - y -1 = 0, eliminate the negative solution.

[@robertgapatas]

Em tempos de Nadson, o Ferinha, o príncipe da seresta

[@davidseed2939]

How many times so we have the golden ratio again derived from x+1=x^2

[@christophbisschopinck9050]

wow🎉

[@jonathanr520]

Ans: log [(sq.rt1.25)+0.5]

[@user-dq3uh6ee5w]

lg(0,5+0,5V5)

[@Billts]

Γιατί βάζεις δύσκολες ασκήσεις.να τυραννίας τον εαυτό σου;