Question

1/radical2+2/radical8+3/radical18​

Answer 1

$\frac{1}{ \sqrt{2} } + \frac{2}{ \sqrt{8} } + \frac{3}{ \sqrt{18} } \\ \frac{1}{ \sqrt{2} } + \frac{2}{2 \sqrt{2} } + \frac{3}{3 \sqrt{2} } \\ \: amplificam \: pe \: prima \: cu \: 6 \: pe \: a \: doua \: cu \: 3 \: si \: pe \: ultima \: cu \: 2 \: \\ \frac{6}{ 6\sqrt{2} } + \frac{12}{6 \sqrt{2} } + \frac{18}{ 6\sqrt{2} } \\ \frac{6 + 12 + 18}{ 6\sqrt{2} } \\ \frac{36}{ 6\sqrt{2} } \\ simplifcam \: \\ \frac{6}{ \sqrt{2} }$