Question

2.[ (195 + 35 : 7) : 8 + 195] - 2² . 10²

Answer 1

Bài làm

   2.[ (195 + 35 : 7) : 8 + 195] - 2² . 10² 

= 2.[ (195 + 5) : 8 + 195] - 2² . 10² 

= 2.[ 200: 8 + 195] - 2² . 10² 

= 2.[ 25 + 195] - 2² . 10² 

= 2. 220 - 2² . 10² 

= 440 - 4 . 100

= 440 - 400

= 40

# Chúc bạn học tốt #

Answer 2

2.[ (195 + 35 : 7) : 8 + 195] - 2² . 10²

^{\(=2.\left[\left(195+5\right):8+195\right]-4.100\)}

^{\(=2\left(200:8+195\right)-400\)}

^{\(=2\left(25+195\right)-400\)}

^{\(=2.220-400\)}

^\(=440-400\)

^\(=40\)

Answer 3

Lời giải 

\(=2.\left[\left(195+5\right):8+195\right]-2^2.10^2\)

\(=2\left(200:8+195\right)-400\)

\(=2.220-400\)

\(=440-400\)

\(=40\)