Question

Выполнить действия над матрицей

A*(2*A+B)*B(A-B)

       2 3
 A=( 4 -1)

B=( 9 -8)
      2  7

Answer 1

 $left[begin{array}{cc}2&3\4&-1\end{array}right]*(2* left[begin{array}{cc}2&3\4&-1\end{array}right]+ left[begin{array}{cc}9&-8\2&7\end{array}right])* left[begin{array}{cc}9&-8\2&7\end{array}right]*( left[begin{array}{cc}2&3\4&-1\end{array}right]- left[begin{array}{cc}9&-8\2&7\end{array}right]=$
$left[begin{array}{cc}2&3\4&-1\end{array}right]*( left[begin{array}{cc}4&6\8&-2\end{array}right]+ left[begin{array}{cc}9&-8\2&7\end{array}right])* left[begin{array}{cc}9&-8\2&7\end{array}right]* left[begin{array}{cc}-7&11\2&-8\end{array}right]=$
$left[begin{array}{cc}2&3\4&-1\end{array}right]* left[begin{array}{cc}13&-2&10&5\end{array}right]* left[begin{array}{cc}-79&163\0&-34\end{array}right]= left[begin{array}{cc}56&11\42&-13\end{array}right]* left[begin{array}{cc}-79&163\0&-34\end{array}right]= left[begin{array}{cc}-4424&8754\-3318&7288\end{array}right]$