Question

Thực hiện phép tính:

a, 5.7²  -  24  : 2³

b,  3³  .  22  -  3³  . 19 

C, 2⁴ .  5  -  131 +  ( 13- 42)² 

D,  12 : { 130 : [500 - (125 + 35 . 7)]}

Answer 1

\(a,=5.49-24:8\\ =245-3\\ =242\\ b,=3^3\left(22-19\right)\\ =3^3.3=3^4=81\\ c,=16.5-131+\left(-29\right)^2\\ =80-131+841\\ =-51+841\\ =790\\ d,=12:\left\{130:\left[500-\left(125+245\right)\right]\right\}\\ =12:\left[130:\left(500-370\right)\right]\\ =12:\left[130:130\right]\\ =12:1\\ =12\)

Answer 2

a,=5.49−24:8=245−3=242b,=33(22−19)=33.3=34=81c,=16.5−131+(−29)2=80−131+841=−51+841=790d,=12:{130:[500−(125+245)]}=12:[130:(500−370)]=12:[130:130]=12:1=12