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

Question:

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

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 $(c)$