Look at the pictures it explains the equation step by step tell me if you have any questions the answer is at the bottom
Answer:

Step-by-step explanation:
We can treat 20v as a regular number and not a term.
To simplify this square root, we need to break it down into parts which can be squared.

Square root of 4 is 2, so that goes outside the radical.
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Hope this helped!
M is equal to 2 over 2.5. I don’t have enough information to figure out b
It's the factor theorem.
P(-4)
Equal to 0