I spend two hours to find the solutionbut not workingI need step by step answer help. Please help

1 Calculate the determinant of 130 2 -2-5 4 3 5 2 1 1-12- 3 (2) Find eigenvalues and eigenvectors of [ 3 5 ) (3) Apply Gram- Schmidt process to the vectors 4 Let A be a 3x8 matrix such that dim Nul A= 5 Find dim Row A, dim Col A, dim Row AT, dim Col AT and dim Nul AT 5 If A is a matrix satisfying AS= A, what can you say about det A