Complete the square for the expression. Write the resulting expression as a binomial squared.
x2 - 12x + ____

Question

Complete the square for the expression. Write the resulting expression as a binomial squared. 
x2 - 12x + ____

anonymous · Answer

hmmm.. ok do you know the formula for the expansion of 

$$(a-b)^{2}$$ ?

anonymous · Answer

x^2 - 12x + 36 = (x + 6)^2
x^2 - 12x + 144 = (x - 12)^2
x^2 - 12x + 36 = (x - 6)^2
x^2 - 12x + 144 = (x + 12)^2
which one is it?

anonymous · Answer

take the term in front of x, divide it by 2 and square it to get the first part.

(-12/2)^2=36

x^2-12x+36

anonymous · Answer

x^2 - 12x + 36 = (x - 6)^2 
or 
x^2 - 12x + 36 = (x + 6)^2

anonymous · Answer

Since the 12 is negative it would be (x-6)^2