SOLUTION: Find the perfect square trinomial whose first two terms are: a^2 - 4a

Algebra ->  Square-cubic-other-roots -> SOLUTION: Find the perfect square trinomial whose first two terms are: a^2 - 4a       Log On


   

Question 201299: Find the perfect square trinomial whose first two terms are:
a^2 - 4a
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
To find the perfect square trinomial, add the square of half the coefficient of the a-term.
a%5E2-4a Add %28-4%2F2%29%5E2+=+4
highlight%28a%5E2-4a%2B4%29 This is the perfect square trinomial. To check, factor.
highlight%28%28a-2%29%5E2%29