SOLUTION: If A and B are 2 matrices, and {{{matrix(1,3,A+B,""="",(matrix(2,1,-2,1)))}}} Find 3A+2B. (Show your work)

Algebra ->  Matrices-and-determiminant -> SOLUTION: If A and B are 2 matrices, and {{{matrix(1,3,A+B,""="",(matrix(2,1,-2,1)))}}} Find 3A+2B. (Show your work)      Log On


   

Question 1105435: If A and B are 2 matrices, and
matrix%281%2C3%2CA%2BB%2C%22%22=%22%22%2C%28matrix%282%2C1%2C-2%2C1%29%29%29
Find 3A+2B. (Show your work)
Answer by Edwin McCravy(20060) About Me  (Show Source):
You can put this solution on YOUR website!
You did not tell us what matrices A and B repesent, just what 
the sum A+B was.  So there are many possibilities.  If fact 
there are an infinite number of possibilities.  Here's one 
possibility:



As you see their sum is as you stated:



So in this one case



But that's just one of trillions of possibilities.

Edwin