Question

Cum sa rezolva ecuatia:

9*+2×3*=99

,,*" inseamna la puterea ,,x"

Answer 1

9 la x=[1,9,81];
3 la x=[1,9,27];
⇒9²+2·3²=81+2·9=81+18=99⇒adevarat;
⇒metoda prin variante;
⇒x=2;