What’s the steps
To this question I don’t know it

Answer:
[tex](-7x^4y^2)(-2x^3y)\\=(-7)(x^4)(y^2)(-2)(x^3)(y)\\=(-7*-2)(x^4*x^3)(y^2*y)\\=(14)(x^7)(y^3)\\=14x^7y^3[/tex]