Question

factorise x cube minus 13 x square + 32 X + 20

Answer 1

x cube-13x square+32x+20.
you do according to factorisation method
p(x)= x cube-13 x square+ 32x+20
take x=-1
(1)cube -13(1)square+32(1)+20
1-13square+32+20
1-169+52
-168+52
-116