Question

what value completes the square for the expression x^2-12x

-6
6
36
-36

Answer 1

soo.. its either 6 or 36

Answer 2

$$\large
x^2+2(x)(\color{red}{?})+(\color{red}{?})^2
$$
what number in the 2nd term, gives you 12x?

Answer 3

6?

Answer 4

or otherwordly,
if
2(x)(n) = 12x

what's n?

Answer 5

36? idk..

Answer 6

ok, if you had

2xn = 12x

solve by "n"

Answer 7

i have no idea

Answer 8

I assume you know how to factor :/
otherwise it wouldn't make much sense to give you a "perfect square trinomial" completion question

Answer 9

yes but I don't know what N equals