exam Maths Puzzle Numerical Ability

Can you help me with the expression please?!

3/x^2+4x+3 - 1/x^-9

THANK YOU!!

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exam Other Question

hi,
does a pie chart always have to add up to 100%? I really need some help with this. Please. Find the axis of symmetry.
Y = x^2 + 5x -9

Thanks