(1) \(\displaystyle x^2+x+\frac{1}{4}\)

(2) \(4^2-9y^2\)

(3) \(4x^2-4x+1\)

(4) \(x^3+27\)

(5) \(x^3+6x^2+12x+8\)

(6) \(\displaystyle \frac{1}{64}x^3-1\)

(7) \(125x^3-75x^2+15x-1\)

(8) \(8x^3-216y^3\)

(9) \(8x^3+36x^2y+54xy^2+27y^3\)

(1) \(2x^2+3x+2\)

(2) \(3x^2-2x-1\)

(3) \(6x^2+17x+5\)

(4) \(5x^2+13x+6\)

(5) \(20x^2+x-1\)

(6) \(6x^2+7x-10\)