SOLUTION: is the following trinomial a perfect square? x^2-4x-4 thanks

Algebra ->  Square-cubic-other-roots -> SOLUTION: is the following trinomial a perfect square? x^2-4x-4 thanks      Log On


   

Question 62885: is the following trinomial a perfect square?
x^2-4x-4
thanks
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
X^2-4X-4
NO! THE DIGIT MUST BE A POSITIVE NUMBER TO BE A PERFECT, NON-IMAGINARY NUMBER.
(X-2)(X-2)=X^2-4X+4 &
(X+2)(X+2)=X^2+4X+4