Question

Given the following perfect square trinomial, fill in the missing term. (Do not type the variable in the blank.)

4x2 + ___x + 49

Answer 1

4x^2+28x+49

The answer is 28.

Answer 2

You could out a square of a binomial in terms of variables.
\[(sx + t)^2 = s^2x^2 + 2stx + t^2 \]

Right away you should be able to find out what s and t are. Then you just calculate 2*s*t to find what goes in the blank.