Question

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Answer 1

cj e kêu k dc giúp e kìa =))))

Answer 2

\(b,2^x=51+13=64\Rightarrow2^{x^{ }}=2^6\Rightarrow x=6\)

\(c,\left(3^{2x-1}\right)=45-18\\ \left(3^{2x-1}\right)=27\\ 3^{2x-1}=3^3\\ 2x-1=3\\ 2x=4\\ x=4:2\\ x=2\)

Answer 3

b) 2^x-13=51
2^x=51+13=64
2^x=2⁶
x=6
c) 45-(3^2x-1)=2.3²
3^2x-1=45-18
3^2x-1=27
3^2x-1=3³
2x-1=3
2x=3+1=4
x=4:2
x=2