Respuesta :

Answer:

3x³+10x²-8x-2

Step-by-step explanation:

(-3x³+7x²-8x+11)-(-3x²+13)

  • remove unnecessary parentheses

-3x³+7x²-8x+11-(-3x²+13)

  • collect like terms

-3x³+10x²-8x+11-13

  • ans=

-3x³+10x²-8x-2