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

Split the summation into smaller summations that fit the summation rules.
Evaluate .
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.
Multiply by .
Cancel the common factor of .
Cancel the common factor.
Rewrite the expression.
Evaluate .
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.