Respuesta :
[tex](xy - x)(y + 10) \\ (xy \times y) + (xy \times 10) - (x \times y) - (x \times 10) \\ x {y}^{2} + 10xy - xy - 10x \\ x {y}^{2} + 9xy - 10x[/tex]
[tex](xy - x)(y + 10) \\ (xy \times y) + (xy \times 10) - (x \times y) - (x \times 10) \\ x {y}^{2} + 10xy - xy - 10x \\ x {y}^{2} + 9xy - 10x[/tex]