The row-echelon form of the augmented matrix of a system of equations is given. find the solution of the system.
1 0 -1
0 1 5 -4
0 0 1

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no