Question

2³-5³:5²+12.2²

2.[(7-3³:3²): 2²+99] -100

3².[(5²-30:11] -2⁴+2.10³

Answer 1

a) 2³ - 5³ : 5² + 12 . 2²

= 8 - 5 + 12 . 4

= 3 + 48

= 51

b) 2 . [(7 - 3³ : 3²) : 2² + 99] - 100

= 2 . [(7 - 3) : 4 + 99] - 100

= 2 . (4 : 4 + 99) - 100

= 2 . 100 - 100

= 100

c) 3² . [5² - 30 : 11] - 2⁴ + 2 . 10³ 

Xem lại đề em nhé!

Answer 2

a) 

\(=8-25+48=31\)

b)

\(=2\cdot\left[\left(7-3\right):4+99\right]-100=2\left[4:4+99\right]=2\cdot100-100=100\)

c)

\(=9\cdot\left[\left(25-\dfrac{30}{11}\right)\right]-16+2000=9\cdot\dfrac{245}{11}-16+2000=\dfrac{24029}{11}\)