Solve for x

2^x+1 - 2^x = 112

Put this in exponent form:
(3square root of x) ( square root of 3 cubed)

Put into equation form:
Horizontal stretch of 2, up 3, left 6, reflection on x-axis.

Please help me with these three so I can work on the rest using these as examples.

Thanks so much for your help!!!!:)