SOLUTION: complete the square by finding the last term x^2-18x+_______

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Question 1069008: complete the square by finding the last term
x^2-18x+_______
Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
c = (b/2a)^2
Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
.
The last term is 81:


x^2-18x + 81 = .


Having the term "-18x", you can easily understand that it is "-2*9*x", hence,  = 81 is the last (third term) they are asking for.



MEMORIZE these identities:   = ,

                             = .


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