Given :

To find : matrix A

Formula used :

Where c_ij = a_i1b_1j + a_i2b_2j + a_i3b_3j + ……………… + a_inb_nj

IF XA = B, then A = X^-1B

. A =

A =

To find

Determinant of given matrix = = 5(3) – (-7)(-2) = 15 – 14 = 1

Adjoint of matrix =

= × =

=

A = =

A = = =

A =

A =