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1 . 32 1. MULTIPLE CHOICE: Read and analyze each item. Choose the letter of the BEST answer. Write the letter in capitalized form (Capslock) Ex. "A". Write your answers on a (1 pt. each item) 1. The solution/s of the equation x2 = 81 is/are a) 9 b) -9 c) 9,-9 d) 9 nor-9 2. Find the solutions of the equation x2 - 9x + 20. a) 4,5 b) -4,-5 c) 10,2 d) -10,2 3. What are the solutions of the equation x2 + 5x + 4? Use the completing the square method. a) 1,4 b) -1,4 c) 1,-4 d)-1,-4 4. Where can we derive the quadratic formula? a) ax2 + bx + c = 0 b) ax2 + bx = -C c) ax² = -bx - c d) All 5. Given the quadratic equation x2 + 2x = 4, what is the value of c? a) 1 b) 4 c)-4 d)2 6. On the same equation on Item 7, what is the value of a? a) 1 b) 4 c) 2 d)-4 7. In the quadratic formula x = -bt/6²-4ac , b2 - 4ac is referred as a) Discrete b) Discrimination c) Discriminant d) Discriminate 8. Find the roots of the equation (x + 5)2 + (x - 2)2 = 37. a) 1,4 b) 1,-4 c)-1, 4 d)-1,-4 9. If the square of a number is added to 3 times, the sum is 108. What are the numbers? a) 11,9 b) 10,9 c) -17,9 d) -12,9 10. A quadratic inequality is an inequality that contains a polynomial of degree 2. This statement is 2a b) Sometimes True a) Always True Undefined c) Never True
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