a) \(\left(20.2,4+12.2,4-48.2,4\right):2\)

\(=\left[2^4.\left(20+12-48\right)\right]:2=2^4.\left(-16\right):2=\left(2^4:2\right).\left(-16\right)=8.\left(-16\right)=-128\)

b)\(\left(75.5^4+175.5^4\right):\left(20.25.125-625.75\right)\)

\(=\left[5^4.\left(75+175\right)\right]:\left[5.\left(4.5.25-125.15\right)\right]\)

...............

c)\(100-\left(75-3^2\right)=100-75+9=34\)

chúc cậu học tốt:) 

nếu được thì làm quen ạ<3

a,   (20.2^4+12.2^4-48.2^2):8^2

     =(20.2^4+12.2^4-12.2^2.2^2):8^2

     =(20.2^4+12.2^4-12.2^4):2^6

     =2^4.(20+12-12):2^6

     =2^4.20:2^6

     =2^4.2^2.5:2^6

     =5

b,

=5^4.(75+175):15625

=5^4.250:15625

=156250:15625

=10

c, Thì chắc bạn chép sai đề bài rồi,đề bài của mình thế này cơ:

16 x 64 x 8² : ( 4³ x 2⁵ x 16 )

=2^4.2^6.2^6:(2^6.2^5.2^4)

=2^18:2^5

=2^13

 K MÌNH NHA

a. \(\left(20.2^4+12.2^4-48.2^2\right):8^2\)

= \(\left[2^4.\left(20+12\right)-48.4\right]:64\)

= \(\left[16.32-192\right]:64\)

= \(\left[512-192\right]:64\)

= \(320:64\)

= \(5\)

b. \(\left(75.5^2+175.54\right):\left(20.125-625.75\right)\)

= \(\left(75.25+175.54\right):\left(20.125-625.75\right)\)

= \(\left(1875+9450\right):\left(2500-46875\right)\)

= \(11325:\left(-44375\right)\)

= \(\dfrac{-453}{1775}\)

c. \(\left[6.64.8^2:\left(4^3-2^5.16\right)\right]\)

= \(\left[6.64.64:\left(64-32.16\right)\right]\)

= \(\left[24576:\left(64-512\right)\right]\)

= \(\left[24576:\left(-448\right)\right]\)

= \(\dfrac{-387}{7}\)