Quadratic Equations

Quantitative Aptitude (SBI-PO)

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I. x² + 3x – 4 = 0

II. y² + 10y + 24 = 0

y > x

x > y

No relation

x ≥ y

Explanation:

??. x² + 3x – 4 = 0
x² + 4x – x – 4 = 0
x(x + 4) – 1 (x + 4) = 0
(x − 1) (x + 4) = 0
x = 1, −4
II. y² + 10y + 24 = 0
y² + 4y + 6y + 24 = 0
y(y + 4) + 6(y + 4) = 0
(y + 6) (y + 4) = 0
y = −4, −6
x ≥ y

By: Amit Kumar

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