Question

if the value of determinant is 31 find the value of x​

Answer 1

Step-by-step explanation:

Given If the value of determinant is 31 find the value of x

• Given determinant x    2
•                  So       - 5    7        =  31
• We need to find the value of x
• Therefore we have
•               So x x 7 – (2 x – 5) = 31
•               So 7x – (- 10) = 31
•               So 7x + 10 = 31
•               Or 7x = 31 – 10
•                Or 7x = 21
•                Or x = 21/7
•               Or x = 3

Reference link will be

https://brainly.in/question/26833298

Answer 2

Answer:

X=3is the final answer