EXERCISE 3C Factorise $2x^{2}+13x+32$ 17+11r+30 3.+20x-69 $4$ $x^{2}+13x-15$ 5.+7x-98 $2x^{2}+2\sqrt{3} x-24$ 7.-21x+90 $3$ $x^{2}-22x+12$ 9.7-4x+3 10. 7 +7/6x+60 $11x^{2}+3\sqrt{3} x+4$ 12 $x^{2}+6\sqrt{6} x+4$ 13. +5,5x+30 14. -24x-180 15. -32r-105 16. -11r-80 17. 6-x- 18. 7-/3x-6 19. 40+3x-x 20. -26x+133 21 7-2,3x-24 $22x^{2}-3\sqrt{5} x-20$ 23. +2x-24 $24$ $x^{2}-2\sqrt{2} x-30$ 25. 7-1-156 26. -32x-105 27. 9+18x+8 28. 6 +17x+12 29. 18+3x-10 +11r-21 31 15+2x-8 32. 21+5x-6 33. 24x-41x+12 34. 3x-14x+8 35. 2+3x-90 36. $\bar{5} x^{2}+2x-3$ $\bar{5} $ 37. $2\sqrt{3} x^{2}+x-5$ $\bar{3} $ 38. $7x^{2}+2\sqrt{14} x+2$ 39. 41 $-$ $6$ $3x^{2}-7x+5\sqrt{3} $ $\sqrt{3} x-16x+8\sqrt{3} $ 40. $5$ $\bar{5} x^{2}+20x-3\sqrt{5} $ 42 $\sqrt{2} x^{2}+3x+\sqrt{2} $ 43. $2x^{2}-3$ $\bar{3} x+2$ 44. 15x-1-28 45. 6-5x-21 46. 2-7x-15 47. 5x-16x-21 48. 6x-11x-35 49. 9-3x-20 50. 10-9x-7 51 7-2+7 52 -2x-9 53. 12 35 35 54. $21x^{2}-2x+\dfrac {1} {21}$ 55.+16 $\dfrac {3} {2}x^{2}+16x+10$ 56 57. - 19 58. 23² -1+ 59. 26x + yj* - 9x + y)-5 60. $92a-by^{2}-424-b\right)-13$

A. Independent Activity 1 Find the missing factor in each of the 1. $x^{3}-8=\left(x-2\right)\left($ 2. $2x^{3}+x^{2}-23x+20=\left(x$ $x+4\right)\left($ 3. $3x^{3}+2x^{2}-37x+12=\left(x-3\right)\left($ 4. $x^{3}-2x^{2}-x^{2}+2=\left(x-2\right)\left($ 5. $2x^{3}-x^{2}-2x+1=\left(2x-1$ ) B. Independent $Asscssmen6$ 1 Determine the factors of the following $1.x^{3}-4x^{2}+4x-3$ 2. $x^{3}+2x^{2}-11x+20$ 3. $3x^{3}-$ $-17x^{2}+22x-60$ 4. $4x^{3}+20x^{2}-47x+12$ 5. $4x^{4}-2x^{3}$ $-4x^{2}+16x-7$ C. Independent Activity 2 Factorize the $fo|lowin9$ 1. $x^{3}-9x$ 2. $2x^{3}+x^{2}-8x-4$ $x^{3}-7x^{2}+11x-5$ 3. 4. $x^{3}+2x^{2}-5x-6$ 5. $2x^{3}-14x-12$

Activity $3s$ What is My Solution Set? Find the solution set of each of the following quadratic inequalities. $1.x^{2+9x+14}>0$ $6$ $2x^{2+13x+21}\leq 0$ $2,$ $x^{2}-5x-24<0$ $7.x^{2}-25x-26>0$ $3.2x^{2}-9x\geq 18$ $8.x^{2+5x}<36$ $4$ $x^{2}.4x-77>0$ $9.$ $2x^{2}-3x-14\geq 0$ $5$ $x^{2}-100<0$ $10.x^{2+17x+7os0}$