Respuesta :

mhanifa

Answer:

12x⁹ + 15x⁸ - 8x⁶ - 10x⁵

Step-by-step explanation:

This is incomplete and should be:  

  • x⁴ • (3x³ - 2) • (4x² + 5x)

Solution with steps:

  • x⁴ • (3x³ - 2) • (4x² + 5x) =
  • x⁵• (3x³ - 2) • (4x + 5) =
  • x⁵• (12x⁴ + 15x³  - 8x - 10) =
  • 12x⁹ + 15x⁸ - 8x⁶ - 10x⁵