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Nature of Roots

If one of the...

Question

If one of the equation x² + ax + 3 = 0 is 1, then its other root is

(a) 3
(b) −3
(c) 2
(d) 1

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Solution

Let be the roots of quadratic equation in such a way that

Here,

Then , according to question sum of the roots

And the product of the roots

Therefore, value of other root be

Thus, the correct answer is

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Q. If x = 1 is a common root of

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