Answer: The given trinomial, 24ab-16a^2-9b^2, can be written as an expression opposite to a square of a binomial.
To do this, we first factor out the greatest common factor of -4a, which gives us:
-4a(6b-4a-9b^2)
We can then factor -9b^2 as -(3b)^2, and group the remaining terms together:
-4a((3b-2a)^2-4a^2)
So the trinomial can be written as -4a( (3b-2a)^2 - 4a^2 ) which is an expression opposite to a square of a binomial (3b-2a)^2.
Explanation: