Quadratic Equations

Quantitative Aptitude(IBPS PO)

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I.(x – 12)² = 0

II. y² – 21y + 108 = 0

y > x

x ≥ y

Explanation:

I.(x – 12)² = 0
=> x – 12 = 0
x = 12
II. y² – 21y + 108 = 0
=> y² – 12y – 9y + 108 = 0
=>y (y – 12) – 9 (y – 12) = 0
=>(y – 9) (y – 12) = 0
y = 9, 12
x ≥ y

By: Amit Kumar

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