About Me Shubham Agrawal IIT Roorkee 2013 graduate IIM Dropout SBI PO under 100 ranker (dropout) Left job to pursue my passion- Education

Linear Equation with 2 variables

Concept If there are 2 equations of the form 1st Method 2 2. 25 , b CA 2 2. 2.

Question -2

Question

Concept If there are 2 equations of the form 2nd Method Subtract or add one equation with the other to eliminate either x or y

Question -2

Question .

Concept Needs 2 equations to find the unique value of the 2 variables If i then infinitely many solution (as it's a2 b2 C2 the same equation)

Applications Q. The sum of the digits of a two digit number is 16 If the number formed by reversing the digits is less than the original number by 18. Find the original umber.

Applications /2 2

Applications Q. The ratio of the ages of the father and the son at present is 3: 1. Four years earliar, the ratio was 4: 1 What are the present ages of the son and the father? 3 12_

Concept . Degree (or power) of one variable is 2 General form: ax2 + bx +c0 where a, b and c are all real numbers and a 0. Example: 2x2 - 5x + 3 0

Concept Roots are- - 4ac 2 First Root: 2a Second Root-

Question Q. Solve 2x2 +6-7x

Question Q. Solve 2x2 +6-7x 2. 48 3/ tv

40 lessons,

5h 25m

Enroll

216

✕Download

Shubham Agrawal

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

U

Unacademy user

RAGHAVENDRA MISHRA

2 years ago

Just incredible!

1

Reply