Question

[nuyễn lê giahuy]

a 142-[50-(2^3.10-2^3.5)]

b 375:{32-[4+(5.3^2-42)]}-14

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sos

Answer 1

[Kudo Shinichi]

a) \(142-\left[50-\left(2^3.10-2^3.5\right)\right]\)

= \(142-\left[50-\left(8.10-8.5\right)\right]\)

= \(142-\left[50-8.\left(10-5\right)\right]\)

= \(142-\left[50-8.5\right]\)

= \(142-\left[50-40\right]\)

= \(142-10\)

= \(132\)

b) \(375:\left\{32-\left[4+\left(5.3^2-42\right)\right]\right\}-14\)

= \(375:\left\{32-\left[4+\left(5.9-42\right)\right]\right\}-14\)

= \(375:\left\{32-\left[4+\left(45-42\right)\right]\right\}-14\)

= \(375:\left\{32-\left[4+3\right]\right\}-14\)

= \(375:\left\{32-7\right\}-14\)

= \(375:25-14\)

= \(15-14\)

= \(1\)

Chúc bạn học tốt !!!

Answer 2

[⚽๖ۣۜTrần ๖ۣۜQuốc🏆๖ۣۜDũng🥇||✅]

a)   142 - [ 50 - ( 2³ . 10 - 2³ . 5 )]

    = 142 - [ 50 - ( 8 . 10 - 8 . 5 )]

    = 142 - [ 50 - ( 80 - 40 )]

    = 142 - [ 50 - 40 ]

    = 142 - 10

   = 132

b)  375 : { 32 - [ 4 + ( 5 . 3² - 42 )]} - 14

    = 375 : { 32 - [ 4 + ( 5 . 9 - 42 )]} - 14

    = 375 : { 32 - [ 4 + ( 45 - 42 )]} - 14

    = 375 : { 32 - [ 4 + 3 ]} - 14

    = 375 : { 32 - 7 } - 14

    = 375 : 25 - 14

    = 15 - 14 

    = 1