Question

[duy132]

[19(4.2^3+18)-9.50]:5^2 giúp mình với mọi người ơi 

Answer 1

[Trịnh Minh Hoàng]

\(\left[19\left(4\cdot2^3+18\right)-9\cdot50\right]:5^2\\ =\left[19\left(4\cdot8+18\right)-450\right]:25\\ =\left[19\cdot50-450\right]:25\\ =\left[950-450\right]:25\\ =500:25\\ =20\)

Answer 2

[HT.Phong (9A5)]

\(\left[19\left(4\cdot2^3+18\right)-9\cdot50\right]:5^2\\ =\left[19\left(4\cdot8+18\right)-9\cdot50\right]:25\\ =\left[19\left(32+18\right)-9\cdot50\right]:25\\ =\left(19\cdot50-9\cdot50\right):25\\ =50\cdot\left(19-9\right):25\\ =\left(50:25\right)\cdot10\\ =2\cdot10\\ =20\)