exam Maths Puzzle Numerical Ability

I need help with these problems please:

18+ sqrt of 565/9

-9 - sqrt of 108/3

6- sqrt of 20/2

sqrt 63 + 2sqrt 28 + 5 sqrt 7

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exam Other Question

10 4 4
---- + --- = ---
2x x-5 1


solve each rational eguation.
Find the equation of the line that:

passes through (-4,3) with slope -2/5