Write it as sqrt(x) or x1/2 or x0.5
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x can be any square number, or a multiple of 5, 11 or any combination of these.
That expression can't be simplified. It has to written, and evaluated, just as it appears in the question: [ sqrt(x + 2) ] + [ sqrt(x + 3) ]
x can be any square number, or a multiple of 5, 11 or any combination of these.
There is no "general" equation. The square root of a number (or expression) is simply sqrt(x) or x1/2, where x is a number or an expression. In more basic mathematics, x must be non-negative but, once you start studying complex numbers, that is no longer a requirement.