Formula for solving (finding x intercepts) quadratic equation is:
\(x = \frac{-b +- \sqrt{b^2 - 4ac} }{2a}\)
Quadriatic equation we can write as:
ax^2 + bx + c = 0
comparing this with given equation we can see that:
a = 1
b = -2
c = -3
if we express this in formula for solving equation we get
\(x = \frac{-(-2) +- \sqrt{(-2)^2 - 4*1*(-3)} }{2*1}\)
