exam Maths Puzzle Numerical Ability

Factor using AC Method. 9x^2-15x-6

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exam Other Question

a) How does correlation analysis differ from regression analysis?
Correlation analysis looks for a connection or interactions between 2 variables. Regression looks for trends in o i totally dont understand this problem; (x-3/2)^2 * (1/x-3)^2
could someone may be explain how i should simplify it?