The area of the square is given by the quadratic expression:
If we have a square whose side measures S, the area of said square is given by the equation:
In this case, we know that the side length of our square is given by:
Replacing that in the area equation we get:
Now we just need to expand that product, we will get:
Then we can see that the correct option is the last one.
If you want to learn more about squares you can read:
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