Question

[Vip]

^{\(\frac{2}{7}x\left(\frac{707}{202}+\frac{707}{3030}+\frac{707}{4242}+\frac{707}{5656}+\frac{707}{7272}\right)\)}

Answer 1

[nguyen van huy]

\(\frac{2}{7}\)x  \(\left(\frac{707}{202}+\frac{707}{3030}+\frac{707}{4242}+\frac{707}{5656}+\frac{707}{7272}\right)\)

\(=\frac{2}{7}\)x   \(\left(\frac{7}{2}+\frac{7}{30}+\frac{1}{6}+\frac{1}{8}+\frac{7}{72}\right)\)

\(=\frac{2}{7}\)x    \(\left(\frac{1260}{360}+\frac{84}{360}+\frac{60}{360}+\frac{45}{360}+\frac{35}{360}\right)\)

\(=\frac{2}{7}\)x   \(\frac{371}{90}=\frac{53}{45}\)