Simplify 8*2^(n-1)-1

Math
8⋅2n-1-1
Rewrite 8 as 23.
23⋅2n-1-1
Use the power rule aman=am+n to combine exponents.
23+n-1-1
Subtract 1 from 3.
2n+2-1
Simplify 8*2^(n-1)-1

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