Answer:
Step-by-step explanation:
I don’t understand
For this case we must simplify the following expression:
We eliminate the parentheses taking into account that:

So:

We add similar terms taking into account that:
Equal signs are added and the same sign is placed.
Different signs are subtracted and the major sign is placed.

Answer:

Your answer would be 7y^(3)+32y^(2)+9
Answer:
10
Step-by-step explanation:
subtract 5y from both sides of the equation