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C. 63 15. A square piece of land was rewarded by a master to his servant. They agreed that a portion of it represented by the rectangle inside, should be used to constructa grotto. How large is the area of the land that is available for the other uses? a, 4x2 - 9 c. 4x2 + x + 9 b. 4x2 - 8x - 9 d. 4x2 2 2x-1 5 - 2x __16. If the product of two consecutive odd integers is 99, what is the sum of their squares? a. 130 b. 126 d. 9 17. The area of a rectangular garden is 9p2 - 64 square units. If one side is 3p-8, what is the other side? a. 3p +8 b. 3p-8 c.p- 8 d. p +8 18. If 3y2 + 1ly + 3 = 0, what is y + 1/y ? a.-11/3 b.-3/11 c. 11/3 d. 3/11 19. If x+y = 10 and xy = 30, what is x2 + y2? a. 40 b. 100 C. 60 d. 20 20. If a+b = 15 and ab = 75, what is a2 + b2 ? , a. 150 b. 75 C. 225 D. 20
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