Quadratic Equations

Quantitative Aptitude ( CCS)

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I.2x² + 7x + 5 = 0

II. 3y² + 12y + 9 = 0

x > y

y ≥ x

No relation

x ≥ y

Explanation:

I.2x² + 7x + 5 = 0
=> 2x² + 2x + 5x + 5 = 0
=> 2x (x + 1) + 5 (x + 1) = 0
=> (2x + 5) (x + 1) = 0
?? = – 5/2 , – 1
II. 3y² + 12y + 9 = 0
=>3y² + 9y + 3y + 9 = 0
=> 3y (y + 3) +3 (y + 3) = 0
=>(3y + 3) (y + 3) = 0
y = –1, – 3
No relation can be established.

By: Amit Kumar

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