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Name: Provide solution for RD Sharma maths class 12 chapter Determinants exercise 5.1 question 10 subquestion (iv)
Uploaded: Wed, 2021-08-04 21:24
Description: Provide solution for RD Sharma maths class 12 chapter Determinants exercise 5.1 question 10 subquestion (iv)

#R.D. Sharma
#Determinants
#Maths
#RD Sharma Vol. 1 Class 12
#CBSE 12 Class
#School

#1.3
#5.2
#5.3
#5.4
#5.5
#5.1
#9.12
#Fill in the blanks
#Very Short Answer type
#Multiple Choice Questions (MCQs)

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Provide solution for RD Sharma maths class 12 chapter Determinants exercise 5.1 question 10 subquestion (iv)

Answers (1)

Answer:

$x=2$

Hint:

Take determinant of matrix on both side and equate it.

Given:

$\begin{aligned} &\left|\begin{array}{cc} 3 x & 7 \\ 2 & 4 \end{array}\right|=10 \\ \end{aligned}$

Solution:

$\begin{aligned} &\left|\begin{array}{cc} 3 x & 7 \\ 2 & 4 \end{array}\right|=10 \\ &12 \mathrm{x}-14=10 \\ &12 \mathrm{x}=24 \\ &\mathrm{x}=2 \end{aligned}$

Posted by

Gurleen Kaur

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Provide solution for RD Sharma maths class 12 chapter Determinants exercise 5.1 question 10 subquestion (iv)

Answers (1)

Posted by

Gurleen Kaur

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