SOLUTION: Find the constant term that should be added to make the following expression a perfect-square trinomial. X^2-12x

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Question 775698: Find the constant term that should be added to make the following expression a perfect-square trinomial. X^2-12x
Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
a%5E2-2ab%2Bb%5E2 - a perfect-square trinomial
x%5E2-12x=x%5E2-2%2Ax%2A6
hence a=x, b=6
the constant term that should be added is b%5E2=6%5E2=36
Answer: 36