Question

Check whether (x-2) is a factor of x cube +x square -x+10 or not

Answer 1

x cube + x square - x+ 10
= x square(x +1)-10(x+1)
=(x+1)(x square-10)

Answer 2

x_2 =0
x=2
xcube+xsquare_x+10
2cube+2square_2+10
8+4+8
20 so we did not get 0 so it is not a factor