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b2-4ac Roots 15. 16. 17. QUADRATIC EQUATION x2 - 4x + 4 = 0 x² - 6x-7=0 3 x2 - 17x + 10 = 0 x² – 2x-2=0 18. - 19. 22. 21. 20. 23. 26. 24. 25. 26.​

B24ac Roots 15 16 17 QUADRATIC EQUATION X2 4x 4 0 X 6x70 3 X2 17x 10 0 X 2x20 18 19 22 21 20 23 26 24 25 26 class=