exam Maths Puzzle Numerical Ability

Here is one of the hardest problems I have even seen! Can you please see if you can help with this one? I feel like I can write some functions, but I am really confused.
CAN YOU

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exam Other Question

Perform the indicated operations

14x-7/x^2+3x-4 times x^2+6x+8/2x^2+5x-3 divided by x^2+2x/x^2+2x-3
Is the following trinomial a perfect square?
x^2+6x+9?