Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
`(20.2^4+12.2^4-48.2^2):8^2`
`=(32.2^4-12.2^4):8^2`
`=[2^4.(32-12)]:8^2`
`=20.2^4:8^2`
`=20.16:64`
`=5`
Ta có: \(\left(20\cdot2^4+12\cdot2^4-48\cdot2^2\right):8^2\)
\(=\left(32\cdot2^4-12\cdot2^4\right):2^6\)
\(=20\cdot\dfrac{2^4}{2^6}\)
=5
\(=\left(5\cdot2^6+11\cdot2^4-23\cdot2^4\right):2^6=5+11\cdot\dfrac{1}{2^2}-23\cdot\dfrac{1}{2^2}=5+\dfrac{11}{4}-\dfrac{23}{4}=2\)
16 + (-17) + ........ + 82 + (-83) + 84 = -1 x 34 + 84
= -34 + 84 = 50
=(16-17)+(18-19)+...+(82-83)+84
=-1+(-1)+...+(-1)+84=(-1)*34+84=-34+84=50
5871:[928-(247-82.5)]
=5871:[928-(247-410)]
=5871:[928-(-163)]
=5871:(928+163)
=5871:1091
=5.381301558
=
a) 52 . 36 + 64 . 52
= 52 . ( 34 + 64 )
= 25 . 100
= 2500
b) 255 - 5. [ 82 - ( 32.4 + 9 )]
= 255 - 5 . [ 82 - ( 9 . 4 + 9 )]
= 255 - 5 . [ 82 - ( 36 + 9 )]
= 255 - 5 . [ 82 - 45 ]
= 255 - 5 . 37
= 255 - 185
= 70
a) 52. 36 + 64 . 52
= 25 . 36 + 64 . 25
= 25 . ( 36 + 64 )
= 25 . 100
= 2500
b) 255 - 5 . [ 82 − ( 32 . 4 + 9 ) ]
= 255 - 5 . [ 82 − ( 9 . 4 + 9 ) ]
= 255 - 5 . [ 82 − ( 36 + 9 ) ]
= 255 - 5 . [ 82 − 45 ]
= 255 - 5 . 37
= 255 - 185
= 70.
a: \(=100\cdot104=10400\)
d: \(=2\cdot9+4\cdot27=18+108=126\)
a , 43 . 125 - 125 . 60
= 125 . ( 43 - 60)
= 125 . ( 64 - 60)
= 125 . 4
= 500
b , -23 + [82 - (-15-17)]
= -23 + (82 +28)
=-23 + 110
= 87
a, 80 - 4 . 5 2 - 3 . 2 3
= 80 – (4.25 – 3.8)
= 80 – 76 = 4
b, 5 6 : 5 4 + 2 3 . 2 2 - 1 2018
= 5 2 + 2 5 - 1
= 25 + 32 – 1 = 56
c, [36.4 – 4. 82 - 7 . 11 2 ]:4 – 2019 0
= (144 – 4. 5 2 ):4 – 1
= (144 – 100):4 – 1
= 11 – 1 = 10
d, 303 – 3.{[655 – (18:2+1). 4 3 +5]}: 10 0
= 303 – 3.(655 – 10.64 + 5):1
= 303 – 10 = 293
(20 . 2^4 + 12 . 2^4 - 48 . 2^2) : 8^2
= (20 . 16 + 12 . 16 - 48 . 4) : 64
= (16 . (20 + 12) - 48 . 4) : 64
= (16 . 32 - 48 . 4) : 64
= (512 - 192) : 64
= 320 : 64
= 5