Lumen OHM

Combine the like terms in the expression:

$\displaystyle {9}{a}^{{2}}+{7}{p}+{11}{a}^{{2}}+{5}{p}$

Write your answer as an expression.

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\displaystyle

Enter your answer as an expression. Example: 3x^2+1, x/5, (a+b)/c
Be sure your variables match those in the question