Add.
your answer should be an expanded polynomial in standard form.
(d^2+6d+9) +(d^3+6d+9)=(d
2
+6d+9)+(d
3
+6d+9)=left parenthesis, d, start superscript, 2, end superscript, plus, 6, d, plus, 9, right parenthesis, plus, left parenthesis, d, start superscript, 3, end superscript, plus, 6, d, plus, 9, right parenthesis, equals