number of quadratic equations which are unchanged by squaring their roots is
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By similar derivation as in case 1, we get b = a, -2a. Now, putting the c values and the corresponding b values in the equation, we get the following 4 quadratic equations which remain unchanged on squaring their roots (three having real roots and one having complex roots)
Ramu111:
How we can say that the roots are complex and real
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