exam Maths Puzzle Numerical Ability

Need help factoring ..need positive exponents

2x(6x-1)^1/2 + 3^2(6x-1)^-1/2

This is what I have

(6x-1)^-1/2x[2(6x-1)+3x]
(6x-1)^-1/2x[12x-2+3x]
(6x-1)^-1/2x(15x-2)

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