Respuesta :

Answer:

2x^2 -x -3

Step-by-step explanation:

7x^2 -3x+1 - (5x^2 -2x+4)

Distribute the minus sign

7x^2 -3x+1 - 5x^2 +2x+-4

I like to line them up vertically

 7x^2 -3x+1

- 5x^2 +2x+-4

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2x^2 -x -3