exam Maths Puzzle Numerical Ability

When I get to Factoring 40 I can not get anything to add to get 22. How would I work the problem out?

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exam Other Question

Q1. (x-1)(x-2)(x^2-9x+14)/(x-7)(x^2-3x+2) 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)