How do you factor #y=x^3-x^2-4x+4 #?
1 Answer
Dec 13, 2015
#y= (x-2)(x+2)(x-1)#
Explanation:
Set the equation equal to zero
Group
Factor the greatest common from each group
#=>x^2(x-1) -4(x-1)= y#
Factor out the greatest common factor from the expression
#=>(x^2-4)(x-1) = y#
Factor the difference of square
#=>(x-2)(x+2)(x-1)= y#