Answer
We must prove that the triangles are not similar triangles to solve this problem.
Work Step by Step
To prove the triangles are not similar, we first find the value of $a$ if the triangles were similar. In problem 42, we found that this would mean:
$$ a=5$$
So, we find:
$$ BD\cdot CD \ne BE \cdot AC \\ (5)(5)\ne (9)(6) \\ 25\ne 54$$
Thus, we see that the triangles are not similar, so the given expression is not true.
