Question 1019087
You know that when you take the square root of a number, you get a positive value and a negative value...
{{{sqrt(25) = 5 or -5}}}
If all that concerns you is the positive value, then you can state it so by placing absolute value signs on it...sometimes we do that with variables, like this...
{{{sqrt(x^2) = abs(x)}}} or {{{sqrt((y - 7)^2) = abs(y-7)}}}
Does that help or do you have further questions?