Im learning about Quadratic Regression, can you please correct me on what I'm doing wrong? I'm doing it the way the teacher taught but I think I may be misunderstanding something.

answer: 12

step-by-step explanation:

5y

step-by-step explanation:

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: