Question

2xy + 7xz + 3y + xy + 2xz

Explanation:

Step1: Identify like terms

Like terms: $2xy, xy$; $7x^2, 2x^2$; $3y$

Step2: Combine $xy$ terms

$2xy + xy = 3xy$

Step3: Combine $x^2$ terms

$7x^2 + 2x^2 = 9x^2$

Step4: Write simplified expression

Combine all results with remaining term

Answer:

$3xy + 9x^2 + 3y$