Factor the following by grouping: 1. 6x2 + 9xy- 14x-21y 2. 5xy - 8x - 10y + 16 3. 12ab - 14a - 6b +7 4. 2p3 + 5p² + 6p + 15 5. 3n-4n² + 9n – 12 6. 12n3 + 4n² + 3n + 1 7. m-m2 + 2m- 2 8. 5n3-10n2 + 3n- 6 9. 35xy-5x - 56y + 8 10. 12ху -28х - 15у + 3

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