Answer
$(2x^n-3)^2$
Work Step by Step
RECALL:
$a^2-2ab+b^2=(a-b)^2$
The given trinomial can be written as:
$\\=(2x^n)^2-2(2x^n)(3)+3^2$
This is in the same form as the formula above where $a=2x^n$ and $b=3$.
Use the formula above to have:
$\\=(2x^n-3)^2$
