Algebra - Ch. 27: The Discriminant (1 of 11) What is the Discriminant?

To donate:

We will learn what is the discriminant of a quadratic equation and how the determinant determines the if the quadratic equation has 2 real solutions, 1 real solution, or no real solution (2 imaginary solutions).

Next video in this series can be seen at:

[mayram]

I swear you have taught me so much I appreciate it. You are an amazing math teacher. I wished u were my math teacher!!!

[plutonium]

I am a student from mainland China, You are very good !thank you

[shaunkiya]

Sir please make a video on image velocity in plane and spherical mirrors....
I need it for better understanding of optics.

[bhabani]

This formula is given by indian mathematician Sridhara in 700 BC approx

[SPRING-ndrm]

Hi sir,
Thanks for making these excellent videos.
Would you please make some videos on coordinate geometry? Thanks again

[aram]

The term 'discriminant' rings a bell from around the matrix chapter. Can these two fields relate in any way?

[aram]

This got me puzzled
x(x-2) = (x-2)^2, so
x(x-2) = (x-2)(x-2), so / (x-2)
x = x-2, so
x-x = -2
0 = -2
The only solution is actually 2, but why are we getting this nonsense? :)