Quadratic Equations

Quantitative Aptitude ( CCS)

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I.12x^2 – 31x + 20 = 0

II.10y^2 – 11y + 3 = 0

y > x

x>=y

y >= x

x > y

Explanation:

I.12x^2 – 31x + 20 = 0
=>12x^2 – 16x – 15x + 20 = 0
=>(3x – 4)(4x – 5) = 0
=> x = 4/3,5/4
From II:
II.10y^2 – 11y + 3 = 0
=>10y^2 – 5y – 6y + 3 = 0
=>(5y-3)(2y-1) = 0
=>y = 3/5,1/2
x>y

By: Amit Kumar

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