27. 9m2 - 66m + 21. 28. 40x2 - 136x - 96. 29. 42y2 + 28y - 14. 30. 8t2 - 16t - 90. 31. 24c2 + 96c + 90. Practice. Form G. Factoring ax2 + bx + c. 63b95dad73 vacflet
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