Răspuns:
Explicație pas cu pas:
[tex]0,45*\sqrt{27} +1,(3)*\sqrt{3} -\frac{3}{4} *\sqrt{243} = \frac{45}{100}*\sqrt{3^{3} } +1\frac{3}{9} -\frac{3}{4} *\sqrt{3^{5}}=\frac{9}{20}*3\sqrt{3} +\frac{12}{9} -\frac{3}{4} *3^{2} *\sqrt{3} = \frac{27}{20}*\sqrt{3} -\frac{27}{4}*\sqrt{3} +\frac{4}{3} = \frac{27}{4}*\sqrt{3} *(\frac{1}{5} -1)+\frac{4}{3}= -\frac{27}{4}*\sqrt{3}*\frac{4}{5} +\frac{4}{3} = \\= - \frac{27}{5}*\sqrt{3}+\frac{4}{3}[/tex]
