Question

логарифмы!!! помогите!!

Answer 1

$(\sqrt{20} )^{2+log_{20} 16} =( \sqrt{20} )^2 * (\sqrt{20} )^{log_{20} 16}=20*(20^{ \frac{1}{2} })^{log_{20} 16} =20*$$20^{log_{20} \sqrt{16} }=20*4=80$