Sum and Product of the Roots of Quadratic Equation

What is the SUM of the roots of quadratic equation x² + 13x + 42 = 0?

• -42

• -13

• 13

• 42

What is the PRODUCT of the roots of x² – 15x + 26 = 0?

• -26

• -15

• 15

• 26

-2x² - 5x + 1 = 0
What are the sum and product of roots?

• Sum = 5/2
  Product = 1/2

• Sum = - 5/2
  Product = - 1/2

• Sum = - 5/2
  Product = 1/2

• Sum = 5/2
  Product = - 1/2

2x² - 6x - 7 = 0
What are the sum and the product of roots?

• Sum = 3
  Product = 7/2

• Sum = - 3
  Product = - 7/2

• Sum = - 3
  Product = 7/2

• Sum = 3
  Product = - 7/2

ax² - 3x - c = 0
Given the sum and product of roots are 6 and -9 respectively. What are the values of a and c?

• a = 1/2
  c = 9/2

• a = - 1/2
  c = - 9/2

• a = - 1/2
  c = 9/2

• a = 1/2
  c = - 9/2

• 5

• 7

• 8

• 13

Answer explanation

• 5

• 7

• 8

• 13

Answer explanation