Exam Problem: Cubic Polynomial w/ 1 Real Root

[brook.f]

You definitely have a gift of teaching. Keep it up 🙌

[kaminibehera]

Sir is there any easier method for getting the roots of a general cubic polynomial

[bopheloseforwe]

Wow ❤

I wish you were my maths teacher.

[NerdFuture]

With the leading coefficient positive, there's a third case where the derivative's always positive, so there's only one root. I can see how to tell whether this is true (looking at the discriminant of the derivative?), but is it reasonably easy to solve for h then?

[avadhootmuli]

I don't know in which grade ur teaching this...but in India we face these questions in 12 grade

[lukekeegan]

If u divide it by a a factor then get a quadratic can you use the discriminant