Check sibling questions

Ex 4.1, 2 - Chapter 4 Class 12 Determinants - Part 2

Introducing your new favourite teacher - Teachoo Black, at only ₹83 per month


Transcript

Ex 4.1, 2 Evaluate the determinant (ii) |■8(x2−x+1&x−1@x+1&x+1)| |■8(x2−x+1&x−1@x+1&x+1)| = (x2 − x + 1) (x + 1) − (x − 1)(x + 1) = (x2 − x + 1) (x + 1) − (x2 − 12) = [(x2 − x + 1) x + (x2 − x + 1)1] − (x2 − 1) = (x3 − x2 + x + x2 − x + 1) − (x2 − 1) = x3 + 1 − x2 + 1 = x3 – x2 + 1 + 1 = x3 − x2 + 2

Davneet Singh's photo - Teacher, Engineer, Marketer

Made by

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.