Ex 4.3

Ex 4.3, 1 (i)
Deleted for CBSE Board 2023 Exams

Ex 4.3, 1 (ii) Important Deleted for CBSE Board 2023 Exams

Ex 4.3, 1 (iii) Deleted for CBSE Board 2023 Exams

Ex 4.3, 1 (iv) Important Deleted for CBSE Board 2023 Exams

Ex 4.3, 2 (i)

Ex 4.3, 2 (ii)

Ex 4.3, 2 (iii)

Ex 4.3, 2 (iv) Important

Ex 4.3, 3 (i) Important You are here

Ex 4.3, 3 (ii)

Ex 4.3, 4

Ex 4.3, 5

Ex 4.3, 6

Ex 4.3, 7 Important

Ex 4.3, 8 Important

Ex 4.3, 9 Important

Ex 4.3, 10 Important

Ex 4.3, 11

Chapter 4 Class 10 Quadratic Equations

Serial order wise

Last updated at Aug. 3, 2021 by Teachoo

Ex 4.3 ,3 Find the roots of the following equations: (i) x – 1/𝑥=3,𝑥≠0 x – 1/𝑥=3 (𝑥(𝑥) − 1 )/𝑥 = 3 (𝑥^2 − 1 )/𝑥 = 3 x2 – 1 = 3x x2 – 3x – 1 = 0 Comparing equation with ax2 + bx + c = 0 So, a = 1, b = –3, c = –1 We know that D = b2 – 4ac D = ( –3)2 – 4×1×−1 D = 9 + 4 D = 13 Hence, roots to equation are given by x = (− 𝑏 ± √𝐷)/2𝑎 Putting values x = (− (− 3) ± √13)/(2 × 1) x = (3 ± √13)/2 Hence, roots to equation are x = (3 + √13)/2 or x = (3 − √13)/2