Question

Is this trinomial a trinomial square? m^2+4m-4

Answer 1

Complete the square and see if it is a perfect square.

Answer 2

And exactly how do I do that?

Answer 3

m^2+4m-4 = (m+2)^2 - 2^2 - 4 = (m+2)^2 - 8. Therefore, it is not a perfect square.