Quadratic Equations

Quantitative Aptitude (RRB NTPC)

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I. 4x² – 9x + 2 = 0,

II. 3y² – 16y + 21 = 0

x > y

x < y

x ≥ y

x ≤ y

Explanation:

4x² – 9x + 2 = 0
4x² – 8x – x + 2 = 0
So x = 1/4, 2
3y² – 16y + 21 = 0
3y² – 9y – 7y + 21 = 0
So y = 7/3, 3
Put all values on number line and analyze the relationship
1/4…. 2…. 7/3… 3

By: Amit Kumar

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