Sagot :
[tex](10xy^{5})(3 x^{3})(-3 x^{4})(z ^{3}) \\ \\ (10xy^{5})(-9 x^{12})(z^{2}) \\ \\ (-90x^{12}y^{5})(z^{3}) \to \boxed{-90 x^{12}y^{5}z^{3}} \\ \\ Hope \ it \ Helps:) \\ Domini [/tex]
Distribute the value of exponent aftrr tjat multiply each numbers and lastly just add those the same variables..