Question

factorise this polynomials

Answer 1

let x = 1
so,
1-23+142_120
143-143
0
so
x-1 is a factor as (x-1)
x=1
there fore divide the problem by x-1
$( {x}^{3} - 23 {x}^{2} + 142x - 120) \div (x - 1)$

Answer 2

see the pic
hope it helps u