1. The problem statement, all variables and given/known data Let A be an nxn matrix belonging to R and x be a vector of length k belonging to R. Find the first column of M = (A − x1I)(A − x2I)...(A − xrI) using a sequence of GAXPY’s operations. 2. Relevant equations GAXPY: General matrix A multiplied by a vector X plus a vector Y 3. The attempt at a solution I tried to figure it out by writing A and x explicitly and then multiplying (A-x1I) ...(A-xrI) but it was so messy and i did not get any result, i want a hint how to start the solution.