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If {:[(3,7)]:}{:[(1,-2),(-2,x)]:}{:[(-1)...

If `{:[(3,7)]:}{:[(1,-2),(-2,x)]:}{:[(-1),(2)]:}=[13]`, then the value of x is

A

0

B

-1

C

1

D

2

Text Solution

Verified by Experts

The correct Answer is:
C
(i) Multiply matrices of LHS and then equate it to [13].
(ii) Find the product of first two matrices and then multiply product matrix with matrix.
(iii) Equate the above resultant matrix to [13].
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