Question

32 mũ x chia 16 mũ x bằng 128

Answer 1

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`\downarrow`

`32^x \div 16^x = 128`

`=> (2^5)^x \div (2^4)^x = 2^7`

`=> 2^(5x) \div 2^(4x) = 2^7`

`=> 2^(5x - 4x) = 2^7`

`=> 2^x = 2^7`

`=> x = 7`

Vậy, `x = 7.`

Answer 2

x = 7

Answer 3

`32^{x} : 16^{x} = 128`

`=>(2^5)^{x} : (2^{4})^{x} = 2^7`

`=>2^{5x} : 2^{4x} = 2^{7}`

`=>2^{x} = 2^{7}`

`=>x = 7`

Vậy `x=7`