Question

3³⁰.(x-2)=(3³²-3³¹)

Answer 1

3³⁰.(x - 2) = 3³² - 3³¹

=> 3³⁰.(x - 2) = 3³¹.(3 - 1)

=> x - 2 = 3.2

=> x - 2 = 6

=> x = 6 + 2

=> x = 8

Vậy x = 8

Answer 2

\(3^{30}.\left(x-2\right)=\left(3^{32}-3^{31}\right)\)

\(3^{30}.\left(x-2\right)=3^{31}.\left(3-1\right)\)

\(x-2=3.2\)

\(x-2=6\)

\(x=8\)

Vậy x = 8

Answer 3

x cua minh = 8 

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