Question

What is the discriminant of `8x ^ { 2} - 2x + 6= 0`?

Answer 1

`-188`

Explanation:

You would find it very useful if you are able to commit the quadratic formula to mind.

It is the `" "b^2-4ac" "` part of `" "x=(-b+-sqrt(b^2-4ac))/(2a)`

Related to `y=ax^2+bx+c`

So we have: `" "(-2)^2-4(8)(6) = -188`