What is the nature of roots of the quadratic equation 4x² − 12x − 9 = 0?

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Solution

The given quadric equation is

Here,

As we know that

Putting the value of

Since,

Therefore, root of the given equation are.

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Similar questions

4 x^{2} + 9 + 12 x = 81

{4 x}^{2} - 12 x + 9 = 0

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Solve the quadratic equation $4 x^{2} + 12 x + 9 = 81$ by completion of squares method. What is the magnitude of sum of both the roots ?

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