https://file.aiquickdraw.com/mathbot/file/172660243319771xldlkc.jpg

read the questions and solve all even numbers

The image you uploaded contains some polynomial addition problems, and I can read it clearly enough to solve the even-numbered questions.

Let's begin solving the even-numbered exercises:

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**18.** \( 10x - 7 \)  
        \( + 6x + 4 \)

Combine like terms:

\[
(10x + 6x) = 16x
\]
\[
(-7 + 4) = -3
\]

So, the result is:
\[
16x - 3
\]

---

**20.** \( 4x^2 + 13 \)  
        \( + 3x^2 - 11 \)

Combine like terms:

\[
(4x^2 + 3x^2) = 7x^2
\]
\[
(13 - 11) = 2
\]

So, the result is:
\[
7x^2 + 2
\]

---

**22.** \( (5y + 10) + (y^2 - 3y - 2) + (2y^2 + 4y - 3) \)

Start by grouping like terms:

\[
(y^2 + 2y^2) + (5y - 3y + 4y) + (10 - 2 - 3)
\]

Simplify each group:

\[
3y^2 + 6y + 5
\]

So, the final result is:
\[
3y^2 + 6y + 5
\]

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If you have any questions or want more detailed explanations, feel free to ask!

Here are 5 related questions for practice:
1. Add \( (3x^2 + 5x + 7) \) and \( (2x^2 - 4x + 1) \).
2. Subtract \( (7y^2 - 3y + 4) \) from \( (9y^2 + 2y - 5) \).
3. Simplify: \( 4x^2 + 3x - 2 + 7x^2 - 5x + 6 \).
4. Multiply \( (x + 2) \) by \( (x - 3) \).
5. Divide \( (2x^3 + 4x^2 - x) \) by \( x \).

**Tip:** When adding or subtracting polynomials, make sure to align like terms (those with the same variables and powers) before combining them!

This exercise covers polynomial addition problems. Learn how to solve even-numbered questions such as combining like terms in polynomials and simplifying expressions. Suitable for students in Grades 7-9.

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