Question 364796
{{{(matrix(2,2,1,2,-2,3))(matrix(2,1,5,4))=(matrix(2,1,1(5)+2(4),-2(5)+3(4)))}}}
{{{(matrix(2,2,1,2,-2,3))(matrix(2,1,5,4))=(matrix(2,1,5+8,-10+12))}}}
{{{(matrix(2,2,1,2,-2,3))(matrix(2,1,5,4))=(matrix(2,1,13,2))}}}