Question

If A=[3 -5
-4 2].Show that A²-5A-14=0​

Answer 1

Answer:

This will be false I think

Step-by-step explanation:

A² = [9,25,16,4] = 54

5 * A = 5*3+-5+-4+2

         =5*3-5-4+2

         = 15-5-4+2

= 8

54-8-14 = 32 not 0