Question

Giải hộ mình mấy câu hỏi gấp ạ 

a, 4 . 5² – 18 : 3²

b, 3². 22 - 3² . 19

c, 2⁴ . 5 - [131- (13 - 4)²]

d, 100: {250 : [450 - (4 . 5³ – 2² . 25)]}         

 

e, 2³ . 15 – [115 - (12 - 5)²]

f, 30.{175 : [355 - (135 + 37 . 5)]}

g, 5871: [928 – ( 247 - 82) . 5] + 2175⁰

e) 2(x- 51) = 2.2³ + 20

g) 2x – 49 = 5.3²                                   

h) [(8x - 12) : 4].3³ = 3⁶

i) 5^{2x – 3} – 2 . 5² = 5². 3    

Answer 1

a) \(4.5^2-18:3^2\)

\(=4.25-18:9\)

\(=100-2\)

\(=98\)

Answer 2

b) \(3^2.22-3^2.19\)

\(=3^2.\left(22-19\right)\)

\(=9.3\)

\(=27\)