Answer :
Given
[tex]4x^2-9a^4[/tex]To factorize.
Explanation:
It is given that,
[tex]4x^2-9a^4[/tex]That implies,
[tex]\begin{gathered} 4x^2-9a^4=(2x)^2-(3a^2)^2 \\ =(2x-3a^2)(2x+3a^2) \end{gathered}[/tex]Hence, the answer is (2x +3a²)(2x - 3a²).