Answer:1. [tex]8 {x}^{10} (x - 5)[/tex]2. [tex]2xy(5 {y}^{8} + 2{x}^{2} + 12 {x}^{3} {y}^{11} )[/tex]3.[tex]3 {a}^{6} b {c}^{2}(5 {c}^{3} - 2 {a}^{2} {b}^{2} )[/tex]4.[tex]{a}^{2} {b}^{3} {c}^{3} {d}^{2}(6 {a}^{3} b - c {d}^{3} )[/tex]5.[tex]8(4 {a}^{6} + ab - 10{b}^{2}) [/tex]