Use Gaussian elimination in a matrix to solve the system of linear equations Here:
x – 2y +3z = 9
-x + 3y +z = - 2
2x -5y +5z = 17

You need to show the box plots

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*

4x 20 is 80 but if ther machine is broken then there is none you have to redo the test