Question

TÍnh nhanh :

23.6^5:(24-3x)^3+7.6^2=5.6^3

 

Answer 1

a: \(\Leftrightarrow23\cdot6^5:\left(24-3x\right)^3=5\cdot216-7\cdot36=828\)

\(\Leftrightarrow\left(24-3x\right)^3=216\)

=>24-3x=6

hay x=6

b: \(\Leftrightarrow\left[\dfrac{2}{3}x-\dfrac{1}{4}\right]=\dfrac{5}{3}\cdot\dfrac{-1}{4}=\dfrac{-5}{12}\)

=>2/3x=-1/6

hay x=-1/4

Answer 2

`23.6^5:(24-3x)^3+7.6^2=5.6^3`

`=23.7776:(24-3x)^3+7.36=5.216`

`=178848:(24−3x)^3+252=1080`

`=178848:(24−3x)^3^2=828`

`=(24−3x)^3=216`

`=(24−3x)^3=6^3`

`=24−3x=6`

`=3x=24−6`

`=3x=18`

`x=6`

`#Nguyen`