Question

12.X = 3 is a zero of the polynomial x 3 -3x+x-3.

Answer 1

${x}^{3} - 3x + x - 3 \\ \\ {x}^{3} - 2x - 3 \\ \\ {3}^{3} - 3 \times 2 - 3 \\ \\ 27 - 6 - 3 \\ \\ 18$

Answer 2

Answer:

I hope you anderstand .......