Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • School
  • Please solve RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 45 maths textbook solution.

Please solve RD Sharma maths Class 12 Chapter 5 Determinants Exercise VSQ Question 45 maths textbook solution.

Answers (1)

Answer:2

Hint: Here we use basic concept of determinant of matrix

Given: \left|\begin{array}{cc} x+1 & x-1 \\ x-3 & x+2 \end{array}\right|=\left|\begin{array}{cc} 4 & -1 \\ 1 & 3 \end{array}\right|

Solution :

\begin{aligned} &=\left|\begin{array}{ll} x+1 & x-1 \\ x-3 & x+2 \end{array}\right|=[4 \times 3]-[-1 \times 1]=13 \\ &=R_{2} \rightarrow R_{2}-R_{1} \\ &=\left|\begin{array}{cc} x+1 & x-1 \\ -4 & 3 \end{array}\right|=13 \end{aligned}

\begin{aligned} &3 x+3-(-4 x+4)=13 \\ &3 x+3+4 x-4=13 \\ &7 x-1=13 \\ &7 x=14 \\ &x=2 \end{aligned}

 

Posted by

infoexpert23

View full answer

Crack CUET with india's "Best Teachers"

  • HD Video Lectures
  • Unlimited Mock Tests
  • Faculty Support
cuet_ads

Similar Questions

Trending Articles/News

anam-khan

CBSE 12th result 2025 sees more in compartment, JNVs on top, perfect-scorers in minor subjects
anam-khan

Low score in CBSE results? Courses, career options after 12th open to you
anam-khan

CBSE class 10, 12 results: West Bengal CM Mamata Banerjee congratulates successful candidates

Latest Question