i: \(4^3\cdot5+\left\{30\cdot\left[\dfrac{\left(12+2^3\right)}{5}+5^2\right]\right\}\)
\(=64\cdot5+\left\{30\cdot\left(\dfrac{20}{5}+25\right)\right\}=320+30\cdot\left(4+25\right)\)
\(=320+30\cdot29\)
=320+870
=1190
k: \(38+10^2:\left[345-\left(3^2\cdot5+2^3\cdot5^2\right)\right]\)
\(=38+100:\left[345-\left(9\cdot5+8\cdot25\right)\right]\)
\(=38+100:\left(345-45-200\right)=38+100:100=38+1=39\)
l: \(40-40:\left\{520:\left[500-\left(130+30\cdot8\right)\right]\right\}\)
\(=40-40:\left\{520:\left[500-130-240\right]\right\}\)
\(=40-40:\left\{520:130\right\}=40-40:4=40-10=30\)
n: \(100:\left\{250:\left[450-\left(4\cdot5^3-2^2\cdot25\right)\right]\right\}\)
\(=100:\left\{250:\left[450-4\cdot125+4\cdot25\right]\right\}\)
\(=100:\left\{250:\left(450-500+100\right)\right\}\)
\(=100:\left\{250:50\right\}=\dfrac{100}{5}=20\)
o: \(\left[504-\left(25\cdot8+70\right)\right]:9-15+19^0\)
\(=\left(504-200-70\right):9-15+1\)
\(=\dfrac{234}{9}-14=26-14=12\)
ô: \(\left[1104-\left(25\cdot8+40\right)\right]:9+3^{16}:3^{12}\)
\(=\left(1104-200-4\right):9+3^4\)
\(=900:9+81=100+81=181\)
ơ: \(2^5\cdot3+4\left[\left(26-22\right)^2:4+6\right]-76^0\)
\(=32\cdot3+4\cdot\left(4^2:4+6\right)-1\)
\(=95+4\cdot\left(4+6\right)=95+40=135\)
`i, 4^3 . 5 + {30.[(12 + 2^3) : 5 + 5^2]}`
` = 64 . 5 + {30.[(12 + 8) : 5 + 25 ]}`
`= 64 . 5 + {30.[20 : 5 + 25]}`
`= 64 . 5 + {30. [4 + 25]}`
`= 64 . 5 + {30 . 29}`
`= 320 + 870`
`= 1190`
`k, 38 + 10^2 : [345 - (3^2 . 5 + 2^3 . 5^2)]`
` = 38 + 100 : [345 - (9 . 5 + 8 . 25)]`
` = 38 + 100 : [345 - ( 45 + 200)]`
` = 38 + 100 : [345 - 245]`
` = 38 + 100 : 100`
` = 38 + 1`
` = 39
`l, 40 - 40 : { 520 : [500 - (130 + 30 . 8)]}`
` = 40 - 40 :{520 : [500 - (130 + 240)]}`
` = 40 - 40 : {520 : [500 - 370]}`
` = 40 - 40 : {520 : 130}`
` = 40 - 40 : 4`
` = 40 - 10`
` = 30`