[tex]4^x^-^3\cdot 2^x^+^2=0\\\\4^x:4^3\cdot2^x\cdot2^2=0\\\\8^x:4^3\cdot4=0\\\\8^x:4^2=0\\\\ Unul\ dintre\ termenii\ impartirii\ trebuie\ sa\ fie\ 0. \longrightarrow 8^x=0\\\\ E\ imposibil\ deoarece\ nu\ exista\ valori\ ale\ lui\ x,\ astfel\ incat\ 8^x=0[/tex]
