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1. MULTIPLE CHOICE: Write the letter of the best answer before the number. с a 2a 1. Which of the following is the standard form of quadratic equation? A ax2+bx+c = 0. a#0 B. ax + by + C = 0 C. ax2+bx+c >0. a D. ax +b+c80. at
2. Which of the following is a quadratic equation in standard form? A 3x - 7=x²2 B 2x2 - 7x= 3 C 22 +28 -4 = 0 D. -5x + 5x - 14 = 0
3. In the quadratic equation 5x2 + 5x -5= 0, which is the quadratic term? A. 5x² В. 5x C. 22 D. - 5
4. What is the formula for the product of the roots? -b - А. В. C. D.
5. In the quadratic equation 8x2 + 9x - 9 = 0, which is the value of b? A. 8 x² В. 9х C. 9 D. -9
6. Which of the following is the quadratic formula? -bivb2-4ac b-vb2-4ac -6+/6²-4ac Α. χ = B. X= C.x= 2a 2a 20
7. What is the nature of roots of the quadratic equation if the d = 23? A. 2 = rational roots B. 2 irrational & roots C. 2 rational but # roots D. 2 imaginary roots
8. What is the nature of the roots of the quadratic equation if the d= 121? A2 = rational roots B. 2 irrational & # roots C. 2 rational but roots D. 2 imaginary roots
9. What are the roots of the quadratic equation x2 - 7x + 6 =0? A 6,-1 B-6.1 C 6.-1 D 6.1
10. Find the sumn and product of the roots if the equation is 3x? - 12x - 9=0. A4 & 3 B-4 & 3 C. 4 & 3 D. -4&-3 D. x = b;vb2-420 1
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