[tex]\boxed{\sf a(b+c+d)=ab+ac+ad}[/tex]
[tex]\\ \sf\longmapsto -2xy^2(x^3y-2x^2y^2+5xy^3)[/tex]
[tex]\\ \sf\longmapsto -2x^4y^3+4x^3y^4-10x^2y^5[/tex]
Hope it helps
