<h2>Greetings!</h2><h3>When expanding brackets, you simply multiply whatever is inside the brackets by what is outside:</h3>

<h3>Which would result in the answer being:</h3>

<h2>Hope this helps!</h2>
the like terms are: 10y, and -9y because they are both of the same variable, y.
all of them is not a quadratic equations
Answer:
all work is shown and pictured