Respuesta :

sqdancefan

Answer:

  15x² +8x +3

Step-by-step explanation:

Use the distributive property and combine terms.

  (5x² +1)(2x +3) -2x(5x² -3)

  = 5x²(2x +3) +1(2x +3) -2x(5x² -3)

  = 10x³+15x² +2x +3 -10x³ +6x

  = (10 -10)x³ +15x² +(2 +6)x +3

  = 15x² +8x +3