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Which trinomials are prime?

Choose all answers that are correct.

x² + 4x-21

x²-5x-2

x² + 3x + 7

x²-x-1

1 Answer

3 votes

Answer:

Explanation:

x² + 4x-21

x²-5x-2

x² + 3x + 7

x² + 4x-21

x²-5x-2

x² + 3x + 7

x²-x-1

x²-x-1

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