exam Maths Puzzle Numerical Ability

This is combining rational expressions with an unlike denominator.

((x^2+2)/(x^2+2x-15)) + ((7-4x)/(15-2x-x^2))

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exam Other Question
How do I factor the polynomial of x^2-5 ? Graph (x+3) (x-2)^2=0 (use maxs, mins, x and y intercepts)