Answer:
3 + x + xy + 3y + y² +y
Step-by-step explanation:
You have to have multiplied every number with every number in the other parentheses:
y · x = <em>xy</em>, y · y = <em>y²</em>, y · 3 = <em>3y</em>
1 · x = <em>x</em>, 1 · y = <em>y</em>, 1 · 3 = <em>3</em>
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Now, add the products together and simplify:
xy + y² + 3y + x + y + 3
3 + x + xy + 3y + y² +y <=== since no like terms can be combined, just
put them in alphabetical order for easier organization