Quadratic Equations

Quantitative Aptitude (RRB NTPC)

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I. 3x² – 13x – 10 = 0

II. 3y² + 10y – 8 = 0

y ≥ x

x ≥ y

y > x

No relation

Explanation:

I. 3x² – 13x – 10 = 0
3x² – 15x + 2x – 10 = 0
(x – 5) (3x + 2) = 0
x= 5, − 2 /3
II. 3y² + 10y – 8 = 0
⇒ 3y² + 12y – 2y – 8 = 0
⇒ (y + 4) (3y – 2) = 0
⇒ ?? = −4, 2/3
No relation

By: Amit Kumar

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