3rd Form Christmas Term Assignment #7

• x=4, -6
• x=3, -5
• x=5, -3
• x=2, -4

• x=3, -10
• x=5, -8
• x=7, -4
• x=10, -14

• x=-3, -6

• x=-2, -9

• x=4, 7

• x=1, 8

• x=-4, -12

• x=2, 24

• x=10, 12

• x=-6, -8

Which of the following is the quadratic formula?

• x = (-b ± √(b^2 - 4ac)) / (2a)
• x = (-b ± √(b^2 + 4ac)) / (a)
• x = (-b ± √(b^2 + 4ac)) / (2a)
• x = (-b ± √(b^2 - ac)) / (2a)

• x=6, -5

• x=-6, 5

• x=3, -10

• x=2, -15

• 2
• 0
• 1
• -1

• x=2, -3

• x=1, 3

• x=-1, 3

• x=1, -3

• a= 30, b= -9, c= 4

• a= -9, b= 4, c=30

• a= 4, b= -9, c= 30

• a= -4, b= 9, c= 30