Question

Tìm x:

3*2^x-3=45

Answer 1

3*2^x-3=45

3*2^x=45+3=48

2^x=48:3=16

2^x=2^4

=> x=4

Vậy x=4

Answer 2

3.2^x-3=45

\(\Rightarrow\)3.2^x=45+3

\(\Rightarrow\)3.2^x=48

\(\Rightarrow\)2^x=48:3

\(\Rightarrow\)2^x=16

\(\Rightarrow\)2^x=2⁴

\(\Rightarrow\)x=4

Answer 3

3.2^x-3=45

3.2^x   =45+3

3.2^x   =48

2^x      =48:3

2^x      =16

suy ra 2^x=2^4

Answer 4

nhớ kích cho tớ nhé!!!!!!!!