Question Paper from: SBI PO Prelims 2017

I. 2x² + 5x + 2 = 0

II. y² + 9y + 20 = 0

1:

x = y or no relation can be established

2:

x ≤ y

3:

x ≥ y

4:

x > y

5:

x < y

Solution:
Chapter Name: Quadratic Equation
Difficulty Level: Moderate

2x² + 5x + 2 = 0

⇒ 2x² + 4x + x + 2 = 0

⇒ 2x(x + 2) + 1(x + 2) = 0

⇒ (x + 2)(2x + 1) = 0

⇒ x = -2,

y² + 9y + 20 = 0

⇒ y² + 4y + 5y + 20 = 0

⇒ y(y + 4) + 5(y + 4) = 0

⇒ (y + 4)(y + 5)

⇒ y = -4, -5

x > y

 

 


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SBI PO Prelims 2017

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