I need some help with these problems I am having problems

Factor completely x^3-x^2-20x

and also

solve: 3/x-1=6/x+2

Thank you

• 1. x^3-x^2-20x=0
  divide by x
  x^2-x-20=0
  x^2-5x+4x-20=0
  x(x-5)+4(x-5)=0
  (x-5) and (x+4) are two factor
  
  x-5=0 and x+4=0
  x=5 x=-4(neglect it)-------answer
  
  2 3/(x-1)=6/(x+2)
  cross multiplication
  
  (x+2)/(x-1)=6/3
  
  x+2+x-1/x+2-x+1=6+3/6-3
  (2x+1)/3=9/3
  2x+1=9
  x=4 ---------------answer
  
• 10 years agoHelpfull: Yes(0) No(0)