SOLUTION: Find the constant term that should be added to make the following expression a perfect-square trinomial. X^2+16x

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Question 775690: Find the constant term that should be added to make the following expression a perfect-square trinomial. X^2+16x
Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
a%5E2%2B2ab%2Bb%5E2 - a perfect-square trinomial
x%5E2%2B16x=x%5E2%2B2%2Ax%2A8
hence a=x, b=8
the constant term that should be added is b%5E2=8%5E2=64
Answer: 64