find and simplify

Question

find 5 (A-B) and simplify

 

A=      5       4        -7                 B=       -2      3        1

 

          3     √5     1/10                            2       8      1/2

 

 

find 5 (A-B) = 

Answer 1

When subtracting matrices, we can subtract the element by element.

 

 

A - B = 

 

 

             (5 - (-2))                  (4 - 3)                       (-7 - 1)

 

          

             (3 - 2)                     (√(5) - 8)                (1/10 - 1/2)

 

 

 

Simplify all the elements.   Each element is enclosed by parentheses.