book Maths Puzzle Numerical Ability

Hello,


I would appreciate it if a tutor could please verify my answer for the below problem.


Solve the rational inequality x+2 / x^2+2x+1 < 0 using the test point method.

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book Other Question
the product of a numberand four increased by seven is three.what is the number? I have been working on this problem for a week and I still can't figure it out. This is what I have so what am I doing wrong?

Let the function f be defined by f(x) = 1/(sqrt1-x^