Quadratic Equations

Quantitative Aptitude (RRB NTPC)

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I. 4x² + 13x + 10 = 0

II. 4y² – 7y – 15 = 0

x > y

x < y

x ≥ y

x ≤ y

Explanation:

4x² + 13x + 10 = 0
4x² + 8x + 5x + 10 = 0
Gives x = -2, -5/4
4y² – 7y – 15 = 0
4y² – 12y + 5y – 15 = 0
Gives y = -5/4, 3
Put all values on number line and analyze the relationship
-2… -5/4…. 3

By: Amit Kumar

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