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a(5a + 1)

a²(5a+1)

(m+x)

(m+x)²

(x+6)²

(x+6)(x-6)

(x²+6)(x²-6)

(x + 1) (x - 4)

(x - 1) (x - 4)

(x + 1) (x + 4)

(x + 1) (x - 4)

(x + 2) (x + 4)

(x + 2) (x + 2)

(x + 4) (x + 4)

(x - 2) (x + 4)

(2x-1)(2x+2)

(2x+1)(3x-2)

(3x-2)(2x-1)

3x

x

y

3xy

3x

x

y

3xy

$$4x^2yz^3\left(20x^2y^2z-9\right)$$  

$$4x^2yz^3\left(10x^3y^2z-9\right)$$  

$$4x^2yz^3\left(20x^3y^2z-9\right)$$  

$$4x^2yz^3\left(20x^3y^2z+9\right)$$  

$$x^2z^3\left(y^3z-3\right)$$  

$$x^2z^3\left(y^3z+3\right)$$  

$$x^2z^2\left(y^3z-3\right)$$  

$$x^2z^3\left(y^3-3\right)$$