human
Substitute negative integer values into expressions involving no powers or roots Amy is trying to work out the distance between these two points: \( (1,-6) \) and \( (-5,2) \) She labels them like this: \( \begin{array}{rrrr}x_{1} & y_{1} & x_{2} & y_{2} \\ (1, & -6) & (-5, & 2)\end{array} \) And then decides to use this formula: \( \sqrt{\left(x_{2}-x_{1}\right)^{2}+\left(y_{2}-y_{1}\right)^{2}} \) What does the second bracket equal? \( (-4)^{2} \)
gpt
When subtracting a negative number from a positive number, uses a method which assumes one of the negative signs can be ignored 