Question

please answer all questions step by step

Answer 1

i) x^3-2x^2-x-2
x^2(x-2) -1(x+2)
(x-2) (x^2-1)
(x-2) (x+1) (x-1)

ii) For x=-1
x^3-3x^2-9x-5
(-1)^3-3(-1)^2-9(-1)-5
-1-3+9-5
=0

x+1 is the factor of the expression
x^3-3x^2-9x-5 /x+1
= x^2-4x-5

Answer is: (x+1) (x+1) (x-5)

Answer 2

sorry I don't know excuse me