If A2 = A, which matrix is matrix A?

Picture attached

[ 5  5]    

[-4 -4]

Step-by-step explanation:

Its the first one

[ 5 5]  *   [ 5 5]

[-4 -4]    [-4 -4]

= [5*5 + 5*-4        5*5 + 5*-4]

  [-4*5 + -4*-4     -4*5 + -4*-4]

=   [ 5  5]

    [-4 -4]

answer: 140

step-by-step explanation:

so just add all then it will be your answer but i am not pretty sur eif it is but hope this i am here to people