Relax

Respuesta :

Answer:

4x² - x

Step-by-step explanation:

Add:

3x² + 2x - 1

x² - 3x + 1

= 4x² - x

Answer:

Step-by-step explanation:

    3x2 + 2x – 1

+      x2 – 3x + 1

= 4x2 – x