Using properties of determinants, prove that \left|\begin{array}{ccc}a^2+2 a & 2 a+1 & 1 \ 2 a+1 & a+2 & 1 \ 3 & 3 & 1|\end{array}=(a-1)^3.

CBSE Class 12 Math 2019 Delhi Set 1 Solved Paper - Question 15

Question : 15 of 29

Marks: +1, -0

Using properties of determinants, prove that

{|\table a^2+2 a , 2 a+1 , 1 ; 2 a+1 , a+2 , 1 ; 3 , 3 , 1|}=(a-1)^3

Solution:

Go to Question:

Prev Question

Next Question