Respuesta :

Answer:

B. [tex]15x^{4}[/tex] + 2x³ - 8x² - 22x - 15

Step-by-step explanation:

1. (3x² - 2x - 3)(5x² + 4x +5)

[tex]15x^{4}[/tex] + 12x³ + 15x² - 10x³ - 8x² - 10x - 15x² - 12x - 15

2. Combine like terms

[tex]15x^{4}[/tex] + 2x³ - 8x² - 22x - 15