Question

what is the magnitude of difference of the root of X²-aX+b=0?​

Answer 1

Step-by-step explanation:

Let the roots be m and n

$a - b = \sqrt{(m - n) {}^{2} } \\ \\ = \sqrt{(m + n) {}^{2} - 4mn} = \sqrt{ {a}^{2} - 4b}$