Question

1. Tính giá trị biểu thức

a) 32 - 6 ( 8 - 2 mũ 3 ) + 8

b) 9234 . [ 3.3.( 1+ 8 mũ 3 )

c) 76 - {2.[2. 5 mũ 2 - (31. 2.3)]} + 3. 25

e) 36 - 12 : 4.3 + 17

Answer 1

a: \(=32-6\left(8-8\right)+8=32+8=40\)

b: \(=9234\left[3^3\cdot513\right]=127900134\)

c: \(=76-\left\{2\cdot\left[2\cdot25-31\cdot6\right]\right\}+75\)

\(=151-2\cdot\left[50-186\right]\)

=423

e: \(=36-9+17=53-9=44\)

Answer 2

a) 32 - 6.(8 - 2³) + 8

= 32 - 6.(8 - 8) + 8

= 32 - 6.0 + 8

= 40

b) 9234 . [3.3.(1 + 8³)]

= 9234 . 9.(1 + 512)

= 9234 . 9 . 513

= 42633378

c) 76 - {2.[2.5² - (31.2.3)]}

= 76 - [2.(2.25 - 186)]

= 76 - [2.(50 - 186)]

= 76 - 2.(-136)

= 76 + 272

= 348

e) 36 - 12 : 4 . 3 + 17

= 36 - 9 + 17

= 44