\(g.4x^3-13x^2+9x-18=4x^3-12x^2-x^2+3x+6x-18=4x^2\left(x-3\right)-x\left(x-3\right)+6\left(x-3\right)=\left(x-3\right)\left(4x^2-x+6\right)\)
\(h.x^2-4x+3+4y-4y^2=x^2-4x+4-4y^2+4y-1=\left(x-2\right)^2-\left(2y-1\right)^2=\left(x-2+2y-1\right)\left(x-2-2y+1\right)=\left(x+2y-3\right)\left(x-2y-1\right)\)