Answer:

Step-by-step explanation:
we know that
The standard form of the quadratic equation is equal to
we have

eliminate the parenthesis

group terms that contain the same variable

combine like terms

Could you possibly put it in a picture?
I just did the first one but I don't know is it correct
Answer: 1/2
Step-by-step explanation: There are only 2 sides in the disc, so there will be a 1/2 chance of landing in one side, and a 1/2 chance of landing in the other side.
So the answer is 1/2!
Hope this helped!
Plz mark brainliest!