Basic Math Examples

$2^{n + 1} - 1 + 2^{n + 1}$

Step 1

Add $2^{n + 1}$ and $2^{n + 1}$ .

$2 \cdot 2^{n + 1} - 1$

Step 2

Multiply $2$ by $2^{n + 1}$ by adding the exponents.

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Step 2.1

Multiply $2$ by $2^{n + 1}$ .

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Step 2.1.1

Raise $2$ to the power of $1$ .

$2^{1} \cdot 2^{n + 1} - 1$

Step 2.1.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$2^{1 + n + 1} - 1$

Step 2.2

Add $1$ and $1$ .

$2^{n + 2} - 1$