The number of quadratic equations having real roots and which do not change by squaring their roots is

(a) 4
(b) 3
(c) 2
(d) 1

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Solution

As we know that the number of quadratic equations having real roots and which do not change by squaring their roots is 2.

Thus, the correct answer is

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Write the number of quadratic equations, with real roots, which do not change by squaring their roots.

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The number of quadratic equations which remain unchanged by squaring their roots, is:

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