Question

is a^2-4a+36 a perfect square trinomial?

Answer 1

36 is a perfect square of \(\pm6\). Hence, instead of having a \(-4\), you must have \(\pm 12\) in front of the a. Thus, it's not a perfect square,

Answer 2

Thank you.

Answer 3

\[(a\pm6)^2=a^2\pm12a+36\]