d: \(x^3-64x=x\left(x-8\right)\left(x+8\right)\)
e: \(8a^2xy-18b^2xy\)
\(=2xy\left(4a^2-9b^2\right)\)
\(=2xy\left(2a-3b\right)\left(2a+3b\right)\)
f: \(32a^3b^3-4\)
\(=4\left(8a^3b^3-1\right)\)
\(=4\left(2ab-1\right)\left(4a^2b^2+2ab+1\right)\)
g: \(x^2-4xy+4y^2-49z^2\)
\(=\left(x-2y\right)^2-49z^2\)
\(=\left(x-2y-7z\right)\left(x-2y+7z\right)\)
h: Ta có: \(3x^2+6x+3-3y^2\)
\(=3\left(x^2+2x+1-y^2\right)\)
\(=3\left(x+1-y\right)\left(x+1+y\right)\)
i: Ta có: \(12x^2y-12y^3+36xy+27y\)
\(=3y\left(4x^2-4y^2+12x+9\right)\)
\(=3y\left[\left(2x+3\right)^2-\left(2y\right)^2\right]\)
\(=3y\left(2x+3-2y\right)\left(2x+3+2y\right)\)
