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1) ![-6(x^2-2x+1) -6(x^2-2x+1)](https://tex.z-dn.net/?f=-6%28x%5E2-2x%2B1%29)
![-6(x^2-2x+1^2) -6(x^2-2x+1^2)](https://tex.z-dn.net/?f=-6%28x%5E2-2x%2B1%5E2%29)
![2ab=2*b*-1 2ab=2*b*-1](https://tex.z-dn.net/?f=2ab%3D2%2Ab%2A-1)
![2ab=-2x 2ab=-2x](https://tex.z-dn.net/?f=2ab%3D-2x)
![-6(x-1)^2 -6(x-1)^2](https://tex.z-dn.net/?f=-6%28x-1%29%5E2)
2)![-27xy^3+54x^2y+9xy -27xy^3+54x^2y+9xy](https://tex.z-dn.net/?f=-27xy%5E3%2B54x%5E2y%2B9xy)
![-9xy(3y^2)+54x^2y+9xy -9xy(3y^2)+54x^2y+9xy](https://tex.z-dn.net/?f=-9xy%283y%5E2%29%2B54x%5E2y%2B9xy)
![-9xy(3y^2)-9xy(-6x)+9xy -9xy(3y^2)-9xy(-6x)+9xy](https://tex.z-dn.net/?f=-9xy%283y%5E2%29-9xy%28-6x%29%2B9xy)
![-9xy(3y^2)-9xy(-6x)-9xy(-1) -9xy(3y^2)-9xy(-6x)-9xy(-1)](https://tex.z-dn.net/?f=-9xy%283y%5E2%29-9xy%28-6x%29-9xy%28-1%29)
![-9xy(3y^2-6x)-9xy(-1) -9xy(3y^2-6x)-9xy(-1)](https://tex.z-dn.net/?f=-9xy%283y%5E2-6x%29-9xy%28-1%29)
![-9xy(3y^2-6x-1) -9xy(3y^2-6x-1)](https://tex.z-dn.net/?f=-9xy%283y%5E2-6x-1%29)
3)![(5x)^2-y^2 (5x)^2-y^2](https://tex.z-dn.net/?f=%285x%29%5E2-y%5E2)
![(5x+y)(5x-y) (5x+y)(5x-y)](https://tex.z-dn.net/?f=%285x%2By%29%285x-y%29)
4)![8(3x^2)-168x+296 8(3x^2)-168x+296](https://tex.z-dn.net/?f=8%283x%5E2%29-168x%2B296)
![8(3x^2)+8(-21x)+296 8(3x^2)+8(-21x)+296](https://tex.z-dn.net/?f=8%283x%5E2%29%2B8%28-21x%29%2B296)
![8(3x^2)+8(-21x)+8(37) 8(3x^2)+8(-21x)+8(37)](https://tex.z-dn.net/?f=8%283x%5E2%29%2B8%28-21x%29%2B8%2837%29)
![8(3x^2-21x)+8(37) 8(3x^2-21x)+8(37)](https://tex.z-dn.net/?f=8%283x%5E2-21x%29%2B8%2837%29)
![8(3x^2-21x+37) 8(3x^2-21x+37)](https://tex.z-dn.net/?f=8%283x%5E2-21x%2B37%29)
5)![(5x-(x+y))*(5x+(x+y)) (5x-(x+y))*(5x+(x+y))](https://tex.z-dn.net/?f=%285x-%28x%2By%29%29%2A%285x%2B%28x%2By%29%29)
![(5x-x-y)*(5x+x+y) (5x-x-y)*(5x+x+y)](https://tex.z-dn.net/?f=%285x-x-y%29%2A%285x%2Bx%2By%29)
![(6x+y)(4x-y) (6x+y)(4x-y)](https://tex.z-dn.net/?f=%286x%2By%29%284x-y%29)
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