Question

I give a crown please help me !

Answer 1

Answer:

x < 0.5

Step-by-step explanation:

$\text{We know:}$

$(a+b)^k> a^k+b^k\ for\ k>1\\\\and\\\\(a+b)^k< a^k+b^k\ for\ k\underbrace{(0.8)^{2x}}_{(a+b)^k}\ \text{therefore}\ 2x$