Question 71151
  x^3-8x^2+7x
= x(x^2-8x+7)
= x(x^2 - x - 7x + 7)
= x( (x^2-x) - (7x-7) )
= x( x(x-1) - 7(x-1) ) 
= x(x-1)(x-7) This is the Answer.