+0

# what is this ?

-1
193
1

what is this ?

$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}$$

Guest May 3, 2017
#1
+2

That is the quadratic formula, used in finding the x intercepts of a parabola. The two answers come from the +- in the equation being -b+-sqrt(...).

Guest May 3, 2017