Question

2 la puterea x = 7 la puterea x
va rog ajutati-ma.
dau 50 de puncte

Answer 1

$\it 2^x=7^x|_{:7^x} \Rightarrow \dfrac{2^x}{7^x}=1 \Rightarrow \left(\dfrac{2}{7}\right)^x=1 \Rightarrow x=0$