Question 1

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Given the following matrices
A equals open parentheses table row cell negative 8 end cell 6 cell negative 9 end cell row cell negative 3 end cell 6 8 row cell negative 4 end cell 5 1 end table close parentheses and B equals open parentheses table row 4 cell negative 5 end cell 0 row 1 8 cell negative 2 end cell row cell negative 2 end cell 5 cell negative 6 end cell end table close parentheses
select the correct equalities.

Equality 1: 10 times A minus 1 times A equals 9 times A
Equality 2: 7 times A plus 4 times B equals 11 times open parentheses A plus B close parentheses
Equality 3: 8 times A plus 1 times B equals 8 times open parentheses A times B close parentheses
Select one or more:
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