c. 9
To complete the square, you take half of the coefficient of b and square it. It's important to note that the value being added will always be positive.





The answer you want is going to be A)
, because all you have to do is add the exponents which -4+-10 would be -14 so therefore the answer you want is going to be A) 
Answer:
He's not right
Step-by-step explanation:
L = 4/6 = 2/3
K = 2/3