Question

16 m^2 n^2 - 8mn + 1​

Answer 1

Step-by-step explanation:

$16 {m}^{2} {n}^{2} - 8mn + 1$

$= ( {4mn)}^{2} - 2 \times 4mn \times 1 + ( {1)}^{2}$

$= ( {4mn - 1)}^{2}$