Question

please say x + 1 is factor of this number. answer step by step it's my request.

Answer 1

=x+1=0(zero of x+1)
=x=-1
=(-1)^3-(-1)^2-(2+✓2)-1(-1)+✓2
=-1-1-2-✓2-1+✓2
=-3
.:it is not a factor of p(x)...
hope it helps