exam Maths Puzzle Numerical Ability

1/x+2 +1/2=1/x-2 - 2x/x^2-4

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exam Other Question

x^2 + x sqr rt of 2 - 2 = 0 Between triangle A and B=20'. Between B and C little a = 12'. Find the values of A,B,C. Corner c is where 90 degrees square is.