Factorise:x3y2−zx2y+x4y3
x2(xy−z+x2y2)
xy2(xy−z+x2y2)
x2y(xy−z+x2y2)
xy(xy−z+x2y2)
x3y2−zx2y+x4y3 =(x×x×x×y×y)−(z×x×x×y)+(x×x×x×x×y×y2) =x2y(xy−z+x2y2)