7. x? - 3x - 10 <0 8. x + 3x - 10 >0 9. x - 4x > 0 10. x + &x > 0 11. x - 9 < 0 12. x - 1< 0 13. x + x > 12 14. x + 7x < -12 15. 2x < 5x + 3 16. 6x < 6 + 5x 17. x - x + 1s0 18. x + 2x + 4 >0 19. 4x2 + 9 < 6x 20. 25x2 + 16 < 40x 21. 6(x2 – 1) > 5x 22. 2(2x² – 3x) > -9

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