Ex 4.2, 1
Find the roots of the following quadratic equations by factorization:
(iv) 2x2 – x + 1/8=0
2x2 – x + 1/8=0
Multiplying both sides by 8
8 × 2x2 – 8x + 8 × 1/8="8 ×" 0
16x2 – 8x + 1 = 0
We factorize using
splitting the middle term method
16x2 – 4x – 4x + 1 = 0
4x (4x – 1) – 1 (4x – 1) = 0
(4x – 1) (4x – 1) = 0
4x – 1 = 0
4x = 1
x = 𝟏/𝟒
4x – 1 = 0
4x = 1
x = 𝟏/𝟒
So, x = 𝟏/𝟒 & x = 𝟏/𝟒 are the roots of equation

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.

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