The domain is group/set of numbers that will work for the equation
if no domain is specifiedl, then the domain is usually the set of all real numbers
to find the domain, find which numbers will violate any rules, such as dividing by zero
if there are any, then just say that the domain is all real numbers except these numbers exg
if you had an equaiton y=2/x then x cannot be zero because 2/0 is undifined and impossible so the domain would be all real numbesr except 0
domain is all real numbers
Answer:
I think it always work out because they try to manipulate the equation such that you'll get 3
you can actually use other values apart from the ones used
I sure its B i might be wrong tho
(x+1)(2x+3)
Hope this helps you
