book Maths Puzzle Numerical Ability

In wich quadrent is each point located? (4,3) (-2,7) (4,-9)

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book Other Question

Of 29 students, 11 have cats, 14 have dogs, and 7 have no pets. How many students have 2 pets? I need help in answering this problem:
(x-5)(2x^2-7x-2)
I have to simplify the problem and write it in standard form.