Quadratic Equations Activity-5

Quadratic Equations Activity-5

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Activity No5 :Determine nature of roots of the quadratic equation.

    4x² + 3x + 5 = 0

Solution: Compare 4x² + 3x + 5 = 0 with ax² + bx + c = 0.

    ∴a = 4, b = , c = 5,

           ∴ b² - 4ac = 4² - 4 X X 5

           ∴b² - 4ac = 16 -

           ∴b² - 4ac = -64

     ∴ b² - 4ac < .
∴ The roots of the equation are not real and unequal.