Question

If the value of the determinant |

2

−5 7

| is 31, find m.​

Answer 1

Answer:

3

Step-by-step explanation:

(metre into 7) minus (minus 5 into two equal to 31 7 minus) minus 10 squared 231 7 + 10 is equal to 13 17 is equal to 21 metre is equal to 3