Question

RÚT GỌN

\(a,\dfrac{121.75.130.169}{39.60.11.198}\)

\(b,\dfrac{\left(3.4.2^{16}\right)^2}{11.2^{13}.4^{11}.16^9}\)

\(c,\dfrac{5.\left(2^2.3^2\right)^9.\left(2^2\right)^6-2.\left(2^2.3\right)^{14}.3^6}{5.2^{28}.3^{19}-7.2^{29}.3^{18}}\)

TÍNH HỢP LÍ

\(a,\left(10^2+11^2+12^2\right):\left(13^2+14^2\right)\)

TÍNH NHANH

\(a,13-12+11+10-9+8-7-6+-4+3+2-1\)

Answer 1

\(a,\dfrac{121.75.130.169}{39.60.11.198}=\dfrac{11.11.25.3.13.10.169}{13.3.6.10.11.11.18}=\dfrac{25.169}{6.18}\)