Use the following long division.

3x²

x2 + 3x + 1 3x4 + 7x2 + 2x2 + 13x + 5

3x² + 9x² + 3x²

- 2x² - x² + 13x

The term 3x2 in the quotient is the result of dividing

3A by

DONE

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