Question

find the value of determinants
$| - 1 \: \: \: 7 | \\ |2 \: \: \: \:4 \: \: \: \: \: |$
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Answer 1

Answer:

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Step-by-step explanation:

Answer 2

Answer:

=> (-1 × 4 )-(2 × 7)

=> -4 - 14

=> -18 answer