Math 9

Identify a, b and c in the quadratic equation: 2x^2-3x-5

• a = 2 , b = 3, c = -5

• a = 2, b = -3, c = 5

• a = 2, b = -3, c = -5

• a = -2, b = 3, c = 5

Determine the value of the coeffienc

x² - 7x + 13=0

• 
  a = 2 , b = -7, c = 13

• 
  a = 1 , b = -7, c = 13

• 
  a = 2 , b = 7, c = 13

• 
  a = 1 , b = 7, c = 13

If D > 0 but not a perfect square, the quadratic equation is said to have 2 real solutions which are ______

• rational and unequal

• irrational and unequal

• 
  rational and equal/repeated

• imaginary and complex

If D > 0 and a perfect square, the roots are _________

• rational and unequal

• irrational and unequal

• rational and equal/repeated

• imaginary and complex

If D < 0, the roots are _________

• Rational and Unequal

• Irrational and Unequal

• Rational and Equal/Repeated

• Imaginary and Complex

Give the Nature of the Roots of a given Quadratic Equations with the following DISCRIMINANT:

D = 4

• The roots are RATIONAL AND EQUAL

• The roots are RATIONAL AND UNEQUAL

• The roots are IRRATIONAL AND EQUAL

• The roots are IRRATIONAL AND UNEQUAL

Give the Nature of the Roots of a given Quadratic Equations with the following DISCRIMINANT:

D = 8

• The roots are RATIONAL AND EQUAL

• The roots are RATIONAL AND UNEQUAL

• The roots are IRRATIONAL AND EQUAL

• The roots are IRRATIONAL AND UNEQUAL

Give the Nature of the Roots of a given Quadratic Equations with the following DISCRIMINANT:

D = 0

• The roots are RATIONAL AND EQUAL

• The roots are RATIONAL AND UNEQUAL

• The roots are IRRATIONAL AND EQUAL

• The roots are IMAGINARY OR COMPLEX

Give the Nature of the Roots of a given Quadratic Equations with the following DISCRIMINANT:

D = - 5

• The roots are RATIONAL AND UNEQUAL

• 
  The roots are IRRATIONAL AND UNEQUAL

• The roots are RATIONAL and EQUAL

• The roots are IMAGINARY OR COMPLEX

What is the formula for the discriminant?

• 
  x = -b/2a

• b² - 4ac

• 
  a² + b² = c²

• x = [-b±√(b²-4ac)]/2a