book Maths Puzzle Numerical Ability

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

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book Other Question

How do I simplify this problem?

(2x^2 + x - 6) / (2x + 4)
how do u simplify
(-y)5m8/y3m-7 if all numbers are exponents