JEE Math Practice Question
Difference between the corresponding roots of $${x^2} + ax + b = 0$$ and $${x^2} + bx + a = 0$$ is same and $$a \ne b,$$ then
- A.$$a + b + 4 = 0$$
- B.$$a + b - 4 = 0$$
- C.$$a - b - 4 = 0$$
- D.$$a - b + 4 = 0$$
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