Question

pls solve it fast I want to do it now​

Answer 1

Answer:

Solution: By eliminating the row and column of an element, the determinant of remaining elements is the minor of the element, i.e. M i × j {{M}_{i\times j}} Mi×j and by using formula ( − 1 ) i + j M i × j {{\left( -1 \right)}^{i+j}}{{M}_{i\times j}} (−1)i+jMi×j we will get the cofactor of the element.

I am really sorry

Answer 2

Answer:

-27

Step-by-step explanation:

     {(-3)^3 × (-2)^5× 7^2}/{(-1)^5×(-7)^2×2^5}

   = { (-27) × (-32)×(49)}/{(-1)×49×32}

  =  {(-27)×(-1)}/{(-1)}   ------ ( Eliminating 49 and 32)

 =   -27   (Eliminating -1 )

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