`#Sad`
`x^6-x^4+2x^3+2x^2`
`= (x^6-x^4)+(2x^3+2x^2)`
`= x^4(x^2-1)+2x^2(x+1)`
`= x^4(x+1)(x-1)+2x^2(x+1)`
`= [x^4(x-1)+2x^2)](x+1)`
`= (x^5-x^4+2x^2)(x+1)`
`= x^2(x^3-x^2+2)(x+1)`
`= x^2(x^3-2x^2+x^2+2x-2x+2)(x+1)`
`= x^2[(x^3+x^2)+(-2x^2-2x)+(2x+2)](x+1)`
`= x^2[x^2(x+1)-2x(x+1)+2(x+1)](x+1)`
`= x^2(x^2-2x+2)(x+1)(x+1)`
`= x^2(x^2-2x+2)(x+1)^2`