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Quadratic Equations
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In this lesson we will discuss, What are quadratic equations, some techniques to solve quadratic equations and some sample problems.

Shubham Agrawal
IIT Roorkee Grad. IIM L |Dropout. SBI PO 2017 Topper and Dropout. Full Time Educator.

U
Unacademy user
GP
please cover permutation combination and probability like this. please please
GP
please add previous year questions after explaining the topic
GP
again well explained, simple and to the point. please continue
  1. Quadratic Equations


  2. About Me Shubham Agrawal IIT Roorkee 2013 graduate Left job to pursue my passion- Education


  3. Quadratic Equations-> Degree (or power) of one variable is 2 General form: ax 2 + bx + c 0 where a, b and c are all real numbers and a 0 Example: 2x2-5x + 3 = 0 . .


  4. Quadratic Equations-> . Roots are- - 2a First Root: cr= 2a .Second Root- 2a


  5. Sample Question-> Q. Solve 2x2 + 6 = 7x


  6. What if b2 - 4ac is negative? .


  7. What if b2 - 4ac is negative? . 2 au n no rea roots


  8. Discriminant- What if b2 - 4ac is negative? . bur 2


  9. Discriminant- . What if b-4ac is 0?


  10. Discriminant- . What if b-4ac is 0? Zo 2a


  11. Properties of Roots-> If and are roots of an equation then equation ca n be written as: (x-a)(x- ) = 0 OR x2-( + )x + = 0 2. CA 2.


  12. Sample Question-> Q. If a and b are the roots of the equation x2-6x + 6 = 0, then the value of a2 +b is?


  13. Sample Question-> Q. If a and b are the roots of the equation x2-6x + 6 = 0, then the value of a2 +b is? the value of a b2 is? a+b = 6 =6 2. 2 Cl 2 2_ 2


  14. Thank You