Answer:
It has higher PE which can be converted into kinetic energy. The car also has had more work done on it when its at a higher position.
Step-by-step explanation:
I think b=6. so try that ok
Answer:
Completing the square we get: 
and factoring the term we get: 
Step-by-step explanation:
We need to complete the square for the expression 
For completing the square the expression would be of form 
For given expression we have to add (2)^2 and subtract to make it complete the square.

Now, we have to factor the polynomial using formula 
So, 
Completing the square we get: 
and factoring the term we get: 