Solve the given determinants
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Answer:
∆ =
Expanding
∆ = 9 { -3 × 12 - ( - 4 × 9 ) } - 1 { 9 × 12 - 9 × 12 } + 1 { 9 × ( -4 ) - ( - 3 × 12 ) }
∆ = 9 ( - 36 + 36 ) - 1 ( 108 - 108 ) + 1 ( - 36 + 36 )
∆ = 0
#TogetherWeGoFar.
Answer:
∆ =
Expanding
∆ = 9 { -3 × 12 - ( - 4 × 9 ) } - 1 { 9 × 12 - 9 × 12 } + 1 { 9 × ( -4 ) - ( - 3 × 12 ) }
∆ = 9 ( - 36 + 36 ) - 1 ( 108 - 108 ) + 1 ( - 36 + 36 )
∆ = 0
#TogetherWeGoFar.
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