book Maths Puzzle Numerical Ability

x^2+5x-6

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book Other Question

wat is the solving equation for 104=1/2[(360-x)-x] and thanks cause me and my dad cant figuere it out This has to do with powers, roots, and radicals. I have a few that i have no clue how to do, they are as follows:
1. f(x)=square root of x+1
2. f(x)=little 3 square root of 5x