x2 + 12x + k what is the value of k for a square
x^2 + 12x + k
Here is the way to find this.......take 1/2 of the coefficient on x = (1/2) * 12 = 6
Now.....square this = 36 and this is "k".....this produces a perfect square trinomial because
x^2 + 12x + 36 factors as (x + 6) (x + 6) = (x + 6)^2
