The question says that the remainder is 3, so whatever k is, when you subtract
–4 from it, you get 3:
The answer is (A).
FACTORING
Performing operations on polynomials is largely a matter of cranking it out.
Once you know the rules, adding, subtracting, multiplying, and even dividing
is automatic. Factoring algebraic expressions is a different matter.
To factor successfully, you have to do more thinking and less cranking. You
have to try to figure out what expressions multiplied will give you the
polynomial you’re looking at. Sometimes that means having a good eye for
the test makers’ favorite factorables: