book Maths Puzzle Numerical Ability

How do I simplify this problem?

(2x^2 + x - 6) / (2x + 4)

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book Other Question

What is 12x-9x14/5-14 Hi Tutors:
I have been reading and looking up topics on various Math help sites, yet I am as lost as ever.
PROBLEM: Find the intersection point (if there is one) and graph, shad