9. What do you call the expression b2 -4ac? a quadratic formula b discriminarnt C constant d. standard form 10. Evaluate the expression b- 4ac given the values of a = 9 b= 0 and c = -4 a 144 b 36 CO d...

Extracted text: 9. What do you call the expression b2 -4ac? a quadratic formula b discriminarnt C constant d. standard form 10. Evaluate the expression b- 4ac given the values of a = 9 b= 0 and c = -4 a 144 b 36 CO d 16 11. Evaluate the expression b? - 4ac given the values of a= 3, b= 6 and c =-5 a -24 C 24 d 96 12 If the disoriminarit of the equation is zero, then the nature of the roots are a real arid equal b. ratiorial but not equal c. irrational and not equal d. not real 13 If the discriminant of the equation is negative, then the nature of the roots are a real and equal b. rational but not equal o. irrational and not equal d not real 14 What is the nature of the roots of the equation x? +12X+ 36=0? a real and equal b rational but not equal c irrational and not equal d not real 15 What is the nature of the roots of the equation x +2x-3=0? a real and equal b. rational but not equal C irrational and not equal d not real Additional Activities This activity reinforces the skills/knowledge that you have gained from this lesson. Activity No. 7: Find My Equation! Given the values of a, b, and o write the quadratic equation in the form of ax + bx +c = 0 and detemine the nature of its roots. 1) a = 1 b=0 C=-3 2) a= 3 b= -6 C=5 3) a= 1 b=7 C= 9 4) a4 5) a=2 b=-8


Extracted text: Uf the following quadratic equation us 1. x2 + 9x +20-0 4. 9x2 - 6x = 9 2 x2 + 5x +10%3D0 5. 2x + 6x +3-D0 3. 10x2-4x=8 Assessment Multiple Choice. Choose the letter of the best answer. 1. Which of the following is a quadratic equation? a. 2r2 + 4r - 1 = 0 b. 3t – 7= 2 c. s? + 5s - 4 d 2x? -7x23 2 In the quadratic equation 7x + 5x? - 4=0, which is the quadratic term? d. -4 a 7x b 5x2 c. 5x 3. Given the equation in # 2, which is the constart term? b. 7x a 5x2 C. 4 d -4 4 Write -2x = - 5x? +5 in the form ax? + bx +c =0 a -2x + 5x2 +5 +0 b. 5x2 - 2x + 5 =0 c. 5x? - 2x -5= 0 d 5x2 -5 = 2x 5. In quadratic equation 2x + x-21 = 0, what is the value of b? d. 2 a -21 b 0 c. 1 6. Given the equation in # 5, what is the value of c? b. 0 a -21 c.1 d. 2 7. What are the roots of the equation r-9= 0? b. -9 C. 13 d. 3 a 19 8. What is the root of the equation x2 + 9x = -8? b. 8 and -1 C -8 and 1 d. -8 and -1 a. 8 and 1