Quadratic Equations

Quantitative Aptitude(IBPS RRB CL)

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I. 30x² + 11x + 1 = 0

II. 42y² + 13y + 1 = 0

y ≥ x

x ≥ y

x > y

No relation

Explanation:

I. 30x² + 11x +1 = 0
30x² + 5x + 6x + 1= 0
5x (6x + 1) +1 (6x + 1) = 0
?? = − 1 /6 or − 1 /5
II. 42y² + 13y + 1 = 0
42y² + 6y + 7y + 1 = 0
6y (7y + 1) +1 (7y + 1) = 0
?? = − 1/ 7 ???? − 1 /6
?? ≥ x

By: Amit Kumar

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