Answer:
Option A
Explanation:
Given the expression:
[tex]9a^3b^6\mleft(3a^3b^2+7a^2b^2\mright)-\mleft(5a^4b^4\mright)^2[/tex]
First, distribute the bracket:
[tex]\begin{gathered} 9a^3b^6\mleft(3a^3b^2)+9a^3b^6(7a^2b^2\mright)-\mleft(5a^4b^4\mright)^2 \\ =27a^6b^8+63a^5b^8-25a^8b^8 \\ =-25a^8b^8+27a^6b^8+63a^5b^8 \end{gathered}[/tex]
The correct choice is A.
