Check sibling questions

Ex 4.3, 2 (i) - Chapter 4 Class 10 Quadratic Equations (Term 2)

Last updated at Aug. 3, 2021 by

Ex 4.3, 2 - Find roots using quadratic formula (i) 2x2 - - Solving by quadratic formula - Equation given

Ex 4.3, 2 - Chapter 4 Class 10 Quadratic Equations - Part 2

This video is only available for Teachoo black users

Subscribe Now

 

Solve all your doubts with Teachoo Black (new monthly pack available now!)

Join Teachoo Black

Transcript

Ex 4.3 ,2 Find the roots of the quadratic equation using quadratic formula (i) 2x2 7x + 3 = 0 2x2 7x + 3 = 0 Comparing equation with ax2 + bx + c = 0 a = 2, b = 7, c = 3 We know that D = b2 4ac D = ( 7)2 4 2 3 D = ( 7 7) (4 2 3) D = 49 24 D = 25 The roots to equation is given by x = ( )/2 Putting values x = ( ( 7) 25)/(2 2) x = (7 (5^2 ))/4 x = (7 5)/4 Solving Both Hence , the roots to equation are 3 and 1/2 .

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.