If 2A+3B = [ 2/4 3/0] and 3A+2B = [-2/1 2/-5] find A and B
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Step-by-step explanation:
Correct option is
B
[
8
−1
1
10
2
−1
]
Since, 2A+3B=[
2
3
−1
2
4
5
] …………(1)
A+2B=[
5
1
0
6
3
2
] ………….(2)
2× Equation (2)− Equation (1)
⇒2A+4B−2A−3B=[
10−2
2−3
0+1
12−2
6−4
4−5
]
⇒B=[
8
−1
1
10
2
−1
]
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