Nature of the roots of a Quadratic Equations

What is/are the nature of the roots if the discriminant is negative?

• irrational and equal

• rational and equal

• rational and not equal

• not real

What is the formula in finding the sum of the roots of quadratic equation?

An equation has a discriminant of 25 . How many solutions does it have?

• 2

• 5

• 1

• 0

• 76

• -7

• -9

• 9

• Two equal real roots

• No real roots

• Two unequal real roots

• 42

• -13

• -42

• 13

• sum = 9

  product = 25

• sum = 0

  product = -25/9

• sum = -25/9

  product = 0

• sum = 25

  product = 9

• 15

• -15

• 26

• -26

• Repeated real roots

• 2 distinct real roots

• Two unreal roots