Quadratic Equations

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

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 . .

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

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

What if b2 - 4ac is negative? .

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

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

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

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

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.

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

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

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Shubham Agrawal

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

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Jajnaseni Sahu

2 years ago

thanks mam

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GOLAK BIHARI PATI

3 years ago

please cover permutation combination and probability like this. please please

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GP

GOLAK BIHARI PATI

3 years ago

please add previous year questions after explaining the topic

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GP

GOLAK BIHARI PATI

3 years ago

again well explained, simple and to the point. please continue

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