Art of Problem Solving: Vieta for Quadratics Part 1

Art of Problem Solving's Richard Rusczyk (maybe?) describes a slick way to quickly find the sum and product of the roots of a quadratic of the form x^2 + bx + c.

[narsinghdevta]

Sir even after 10 years this video is giving me the best refreshing experience about the chapter


I just love you teaching style🤝🙏

[johnrobiedemotor]

I like the way you teach sir. I'm both learning and entertained.

[justinkim__]

"Don't know the roots? DON"T CARE"

[ArtofProblemSolving]

First, your formula for the sum of the roots is incorrect. It's -b/a, not -a/b. Second, the point of this lesson (and the next part) is to prove those formulas! It's not a great idea to just memorize them without deeply understanding them, because you might, um, misremember them...

[MrBenzodiazepines]

Can you show us the full potential of vieta's formula on polynomials such as cubics and quartics?

[ilikesouppp]

It seems like he is really enjoying roasting ”the other dude”.

[leninade]

Wearing a collared shirt kinda defeats the purpose of wearing a sweatshirt and sunglasses, love the style of the vid though!

[robertopatino]

Using the quadratic formula we get that the sum is -b/a and the product is c/a

[ilikesouppp]

5:03 don't know the roots? DON'T CARE.

[epmathic]

Check out some of my tough examples with Vieta's formulas :):)

[am-gminequality]

He at first instance looks like "DJ wale babu mera gana chalado"

[tommy]

I know it's Richard Rusczyk in disguise

[SathvickSatish]

The other guy was me but not after watching this video :)

[ankushvasireddy]

The quadratic isn't set equal to 0

[summerhadnot]

i am in 6th grade and this i easy omg easy