+0

# All the entries of the matrix ​

0
49
1

All the entries of the matrix  $$\begin{pmatrix} 5 & 2 \\ c & -7 \end{pmatrix}$$

and its inverse are integers. Find all possible values of c.

Apr 2, 2021

### 1+0 Answers

#1
0

The possible values of c are 8 and -10.

Apr 2, 2021