Split the summation into smaller summations that fit the summation rules.

The formula for the summation of a polynomial with degree is:

Substitute the values into the formula and make sure to multiply by the front term.

Simplify.

Simplify the expression.

Add and .

Multiply by .

Cancel the common factor of .

Cancel the common factor.

Rewrite the expression.

The formula for the summation of a constant is:

Substitute the values into the formula.

Simplify.

Remove parentheses.

Multiply by .

Add the results of the summations.

Add and .

Evaluate sum from n=1 to 12 of 2n+5