Question

Easy Question! Find the number that should be added to the expression to create a perfect square trinomial: x^2 − 8x

Answer 1

Answer: The answer is C

Step-by-step explanation:

Well, an example of a perfect square trinomial would look like is:

                   $a^2-2ab+b^2$      or      $a^2+2ab+b^2$

So since we already know what $a^2$ is and what $2ab$ is we just have to find $b^2$

However, we would use the $a^2-2ab+b^2$ formula to solve this since we have a subtraction sign