book Maths Puzzle Numerical Ability

How do I solve this problem?

(x - 3 / 2)^3 ? (1 / x - 3)^2

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book Other Question

Can you please help me solve this problem? z^2-{y+3)^2

Thank you in advance for your help.
Dear Tutor,
How do you write an equation that shows the relationship between two numbers?
Thank you