Easy medal, help please.

Which of the following is a requirement for a trinomial to be factored as a perfect square?
A.
The coefficient for the x term must be twice the square root of the first term.
B.
The coefficient for the x term must be twice the square root of the last term.
C.
The coefficient for the x term must be twice the product of the square roots of the first and last terms.
D.
The coefficient for the x term must be half the product of the square roots of the first and last terms.

Question

Easy medal, help please.

Which of the following is a requirement for a trinomial to be factored as a perfect square?
A.
The coefficient for the x term must be twice the square root of the first term.
B.
The coefficient for the x term must be twice the square root of the last term.
C.
The coefficient for the x term must be twice the product of the square roots of the first and last terms.
D.
The coefficient for the x term must be half the product of the square roots of the first and last terms.

mathmale · Answer

I'd suggest you start by ruling out the worst choices.  How would you do that?