[tex] {25x}^{2} - 4x + 16[/tex]is NOT a perfect square trinomial. Which criteria are not met?

Answer:
b is not the product of 2 times the product of the roots because:
Explanation:
The initial expression is:
25x² - 4x + 16
It is a trinomial because it has three terms: 25x², - 4x, and 16.
Additionally, the 1st and 3rd term are perfect squares because:
[tex]\begin{gathered} \sqrt[]{25x^2}=5x^{} \\ \sqrt[]{16}=4 \end{gathered}[/tex]Finally, the only correct statement is that b is not the product of 2 times the product of the roots because:
[tex]\begin{gathered} -4x\ne2(5x)(4) \\ -4x\ne40x \end{gathered}[/tex]Therefore, the answer is: b is not the product of 2 times the product of the roots because: