Question

(X'2 -4x) (X'2-4x-1) -20

Answer 1

Answer:

x'4-16x'3+14x'2+4x-20

Step-by-step explanation:

by getting roots to perform roots operation

Answer 2

Step-by-step explanation:

$( {x}^{2} - 4x)( {x}^{2} - 4x - 1) - 20 \\ {x}^{4} - 4 {x}^{3} - {x}^{2} - 4 {x}^{3} + 16 {x}^{2} + 4x - 20 \\ {x}^{4} - 8 {x}^{3} + 15 {x}^{2} + 4x - 20$