Find the value of the following determinant:
67 19 20
39 13 14
81 24 25
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Answered by
1
Answer:
-56
Step-by-step explanation:
=67(25×13-14×24)-19(39×25-81×14)+20(39×24-13×81)
=67(325-336)-19(975-1134)+20(936-1053)
=67×(-11)-19(-159)+20(-117)
=-737+3021-2340
=-56
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