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Mathematics, 07.11.2020 03:20 MK100

Perform the indicated row operation: 2 −1 −4 7
−1 2 1 −1
3 4 5 5

R3=3R2⇒R3

2 -1 -4 7
-1 2 1 -1

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Perform the indicated row operation: 2 −1 −4 7
−1 2 1 −1
3 4 5 5

R3=3R2⇒R3...
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