Question

Rút gọn

a) 20 - 12 . 20/ -30 - 30 . 10

b) 11^9 . 3^15 . 27/ 3^10 .11^11. 3^8

Answer 1

Em cố gắng gõ latex nha

Answer 2

a: \(=\dfrac{20\left(1-12\right)}{30\left(-1-10\right)}=\dfrac{2}{3}\)

b: \(=\dfrac{11^9\cdot3^{18}}{3^{18}\cdot11^{11}}=\dfrac{1}{121}\)