Question

Am nevoie de 8..multumesc

Answer 1

$4^x= \frac{2^x+3*2^x}{2} \\ 2*4^x=2^x+3*2^x \\ 2*4^x=4*2^x \\ 2^{1+2x}= 2^{2+x} \\ \\ 1+2x=2+x \\ x=1$