book Maths Puzzle Numerical Ability

What is the axis of symmetry of x^2+9x+4?

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book Other Question

please help me {x-2}<1 need to graph it Find the value of x.

(5/(x+4))-((3x-5)/(x^2+x-12))=(4/(x-3))

Possible answers

a. -13
b. -13/2
c. 13/2
d. 13