book Maths Puzzle Numerical Ability

SOME MATHMATICAL APPLICATIONS IN BUSINESS INVOLVE FINDING A BREAK-EVEN POINT. THE BREAK-EVEN POINT REPRESENTS THE NUMBER OF ITEM PRODUCED AND SOLD SUCH THAT THE COST OF PRODUCING

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trying to work a problem to see if the set of points could be vertices of a right triangle.
(-4,5), (6,1), and (-8,-5)
Im not sure what to do with 3 sets of numbers using the dis Hello, I would appreciate it if a tutor could please verify my answer for the below problem.

Solve the rational inequality: x^2-7x+10 / x+3 > 0

My answer:

Numerator