Question

81 nhân (27 cộng 9 ngũ 15) chia (3 ngũ 5 cộng 3 ngũ 32)

Answer 1

=81*(27+9^15):(3^5+3^32)

\(=\dfrac{3^4\cdot\left(3^3+3^{30}\right)}{3^5+3^{32}}=\dfrac{3^7\left(1+3^{27}\right)}{3^5\left(1+3^{27}\right)}=\dfrac{3^7}{3^5}=9\)