exam Maths Puzzle Numerical Ability

-2 = 1 over 1+x (-) 3 over 1-x

I have:

-2(1-x)(1+x) = 1-x-3(1+x)

-2(1+x-x-x^2) = 1-x-3-3x

-2-2x+2x+2x^2 = -2-4x

-2+2x^2 = -2-4x

2x^2+4x-2 = -2


Please help!

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