To get a decimal form of a fraction, divide the numerator by the denominator.
7/8 = 0.875
The equidistant point for all three, will be the "centroid" of their triangular locations
thus
Find the factors from the roots, then multiply the factors together.
y
=
x
2
−
21
x
+
104
K = 70 i did 6 x -5 which was -30 then -30+100 = 70