Question

Use the quadratic formula to find any x-intercepts on the graph of the equation.
y=x^2-2x-4

Answer 1

first, identify the a, b, c in your equation.
to find the roots (x-intercepts) of \(\large y=ax^2+bx+c \), the quadratic formula is:
\(\large x=\frac{-b \pm \sqrt{b^2-4ac}}{2a} \)

Answer 2

I have that I just do not know how to solve it.

Answer 3

A = 1 B=-2 C=-4

Answer 4

good... now just stick those values into the formula and simplify......

Answer 5

\(\huge x=\frac{-(-2) \pm \sqrt{(-2)^2-4(1)(-4)}}{2(1)} \)

Answer 6

Right I have all that and i have it down to -2√24/2

Answer 7

Reduced it would be -2 \[\sqrt{12}\]