Question

Answer 1

c=2

d=-1/3

Mình ko giải ra chi tiết đc vì nó lâu

Thông cảm cho mình nhé

Answer 2

a)813.1118+718.813−1813=813(1118+718)−2113=813.1−2113=813−2113=−1313=−1

Answer 3

d: \(\dfrac{4^5\cdot9^4-2\cdot6^9}{2^{10}\cdot3^8+6^8\cdot20}\)

\(=\dfrac{2^{10}\cdot3^8-2^{10}\cdot3^9}{2^{10}\cdot3^8+2^{10}\cdot3^8\cdot5}\)

\(=\dfrac{-2^{11}\cdot3^8}{2^{11}\cdot3^9}\)

\(=-\dfrac{1}{3}\)