Question

Помогите пожалуйста

Answer 1

$Xcdot A=B; ; to ; ; Xcdot Acdot A^{-1}=Bcdot A^{-1}; ; to ; ; underline {X=Bcdot A^{-1}}\\A= left(begin{array}{cc}3&6\4&4end{array}right) ; ; ,; ; A^{-1}= left(begin{array}{cc}4&-6\-4&3end{array}right); ; ,; ; B= left(begin{array}{cc}2&4\9&18end{array}right) \\X= left(begin{array}{cc}2&4\9&18end{array}right)cdot left(begin{array}{cc}4&-6\-4&3end{array}right)= left(begin{array}{cc}-8&0\-36&0end{array}right)$