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CBSE Class 12 Math 2013 Solved Paper

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Question : 5
Total: 29
If [
9−14
−213
] = A + [
12−1
049
], then find the matrix A.
Solution:  
[
9−14
−213
] = A + [
12−1
049
]
⇒ A = [
9−14
−213
] - [
12−1
049
]
⇒ A = [
9−1−1−24+1
−2−01−43−9
]
⇒ A = [
0−35
−2−3−6
]
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