a)A=55 - [49 - ($2^{3}$ ×17 - $2^{3}$ ×14)]
A=55 - [49 - ($2^{3}$ ×(17 - 14)]
A=55 - [49 - (8 × 3)]
A=55 - [49 - 24]
A=55 - 25
A=30

b)B=100 ÷ {250 ÷ [450 - (4 × $5^{3}$- $2^{2}$× 25)]}
B=100 ÷ {250 ÷ [450 - (4 × 125 - 4 x 25)]}
B=100 ÷ {250 ÷ [450 - (4 × (125 - 25)]}
B=100 ÷ {250 ÷ [450 - (4 × 100)]}
B=100 ÷ {250 ÷ [450 - 400]}
B=100 ÷ {250 ÷ 50}
B=100 ÷ 5
B=20

c)C=325 - 5 × [$4^{3}$ - (27 - $5^{2}$ ) ÷$1^{18}$ ]
C=325 - 5 × [64 - ( 27 - 25 ) ÷ 1 ]
C=325 - 5 × [64 - 2 ÷ 1 ]
C=325 - 5 × [ 64 - 2 ]
C=325 - 5 × 62
C=325 - 310
C=15

d)D=$17^{0}$ + [ $5^{13}$ ÷ $5^{11}$ - $(135-130)^{3}$ ]
D=0 + [ $5^{2}$ - $5^{3}$ ]
D=0 + [ 25 - 125 ]
D=25 - 125
D=-100

e)E=$72^{3}$ × $\frac{54^{2}}{108^{4}}$ 
E=$72^{3}$ × $\frac{2916}{108^{4}}$ 
E=$\frac{72^{3}×2916}{108^{4}}$ 
E=$2^{3}$ 
E=8

g)G=$3^{10}$ × 11 + $3^{10}$ ×$\frac{5}{39}$× $2^{4}$
G=$3^{10}$ × (11 + $\frac{5}{39}$) × $2^{4}$
G=59049 × $\frac{434}{39}$ × 64
G=$\frac{8542422}{13}$ × 64
G=$\frac{546715008}{13}$

h) H=11×$3^{22}$ ×$3^{7}$ -$\frac{9^{15}}{( 2×3^{14} )^{2}}$  
H=11×$3^{29}$ -$\frac{9^{15}}{( 2×3^{14} )^{2}}$  
H=11×$3^{29}$ -$\frac{3^{2}}{2^{3}}$
H=11×$3^{29}$ -$\frac{9}{2^{3}}$
H=$\frac{44 × 3^{29}-9}{4}$ 

Đáp án:

a) A=55-[49-(2^3×17-2^3×14)] b) B=100÷{250÷[450-(4×5^3-2^2×25)]} c) C=325-5×[4^3-(27-5^2)÷1^18] d) D=17^0+[5^13÷5^11-(135-130)^3] e) E=72^3×54^2/108^4 g) G=3^10×11+3^10×5/39×2^4 h) H=11×3^22×3^7-9^15/(2×3^14)^2

Giải thích các bước giải:
A-30

B-tự
C-làm
D-ik
E-người
G-ta 
H -đã 
làm
cho
rồi mà còn kêu