Add. (3a^2 + 8a + 9) + (7a + 9) ______

Write Problem and Align: Write down the problem and align like terms. (3a^2 + 8a + 9) + (7a + 9) Here, we align the terms with the same degree: the a^2 terms, the a terms, and the constant terms.Add Like Terms: Add the like terms. Since there is no a^2 term in the second polynomial, we simply bring down the 3a^2 term. Then we add the a terms and the constant terms. 3a^2 + (8a + 7a) + (9 + 9)Perform Addition: Perform the addition. 3a^2 + 15a + 18 We added 8a and 7a to get 15a, and added 9 and 9 to get 18.

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Add. $\newline$ $(3a^2 + 8a + 9) + (7a + 9)$ $\newline$ ______

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Algebra 1

Add and subtract polynomials

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Q. Add.

\newline

(3a^2 + 8a + 9) + (7a + 9)

\newline

______

Write Problem and Align: Write down the problem and align like terms. $\newline$ $(3a^2 + 8a + 9) + (7a + 9)$ $\newline$ Here, we align the terms with the same degree: the $a^2$ terms, the $a$ terms, and the constant terms.
Add Like Terms: Add the like terms. $\newline$ Since there is no $a^2$ term in the second polynomial, we simply bring down the $3a^2$ term. Then we add the $a$ terms and the constant terms. $\newline$ $3a^2 + (8a + 7a) + (9 + 9)$
Perform Addition: Perform the addition. $\newline$ $3a^2 + 15a + 18$ $\newline$ We added $8a$ and $7a$ to get $15a$ , and added $9$ and $9$ to get $18$ .