if you have x squared x and then a blank what is tha value of that blank
x2+x+b what is b perfect square of a trinomial?
x^2 + x + b = (x+u)^2 = x^2 + 2 u x + u^2
2 u = 1
so u = 1/2
and b = (1/2)(1/2) = 1/4
so if it is
x^2 + u + 1/4
then it is a perfect square of
(x + 1/2)