Question

Proszę o pomoc w tych zadaniach ;(

Wielkie dzięki z góry !

Answer 1

zad.1 

 

[tex][\sqrt{\frac{84}{81}}:\frac{2\sqrt{21}}{\frac{1}{3}^{-2}}-\sqrt{\frac{4}{5}^{2}+\frac{3}{5}^{5}}]*2-\sqrt{6}^{2}= [\frac{\sqrt{4*21}}{9}:\frac{2\sqrt{21}}{\9}}-\sqrt{\frac{16}{25}+\frac{9}{25}}]*2-6=[{2\sqrt{21}*\frac{9}{2\sqrt{21}}-\frac{4}{5}+\frac{3}{5}]*2-6=-\frac{1}{5}*2-6=-0,4-6=-6,4[/