Mathematics
Grade9
Easy

Question

Simplify the product
negative 3 open square brackets table row cell negative 4 end cell 1 0 row 9 cell negative 5 end cell cell negative 7 end cell end table close square brackets

  1. open square brackets table row 12 3 0 row cell negative 27 end cell 15 21 end table close square brackets
  2. open square brackets table row 12 cell negative 3 end cell 0 row cell negative 27 end cell cell negative 15 end cell cell negative 21 end cell end table close square brackets
  3. open square brackets table row cell negative 12 end cell cell negative 3 end cell 0 row 27 15 21 end table close square brackets
  4. open square brackets table row 12 cell negative 3 end cell 0 row cell negative 27 end cell 15 21 end table close square brackets

hintHint:

The multiplication rule of matrices is applicable here. Multiply the digit outside the matrix with all the number inside the matrix.

The correct answer is: open square brackets table row 12 cell negative 3 end cell 0 row cell negative 27 end cell 15 21 end table close square brackets


    negative 3 open square brackets table row cell negative 4 end cell 1 0 row 9 cell negative 5 end cell cell negative 7 end cell end table close square brackets equals open square brackets table row cell open parentheses negative 3 close parentheses open parentheses negative 4 close parentheses end cell cell open parentheses negative 3 close parentheses open parentheses 1 close parentheses end cell cell open parentheses negative 3 close parentheses open parentheses 0 close parentheses end cell row cell open parentheses negative 3 close parentheses open parentheses 9 close parentheses end cell cell open parentheses negative 3 close parentheses open parentheses negative 5 close parentheses end cell cell open parentheses negative 3 close parentheses open parentheses negative 7 close parentheses end cell end table close square brackets equals open square brackets table row 12 cell negative 3 end cell 0 row cell negative 27 end cell 15 21 end table close square brackets

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