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Mathematics

Discuss the nature of the roots of the following equation without actually solving it:

x2 + 23x2\sqrt{3}x - 1 = 0

Quadratic Equations

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Answer

Comparing x2 + 23x2\sqrt{3}x - 1 = 0 with ax2 + bx + c = 0 we get,

a = 1, b = 232\sqrt{3} and c = -1.

We know that,

Discriminant = D = b2 - 4ac = (23)2(2\sqrt{3})^2 - 4 × 1 × -1

= (2 × 3) + 4 = 10 ; which is positive and is not a perfect square.

Since, b is irrational and discriminant is greater than zero.

Hence, the roots are irrational and unequal.

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