Quadratic Equations

Quantitative Aptitude (CCS)

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I. 40x²-13x+1=0

II. 10y²-11y-6=0

x > y

x ≥ y

x < y

x = y or Cannot be determined.

Explanation:

40x²-13x+1=0
40x² -8x-5x+1=0
8x(5x -1) -1(5x -1)=0
(5x-1) ( 8x-1)=0
x= 1/5 , 1/8
10y²-11y-6=0
10y² -15y+4y -6=0
5y( 2y-3) +2(2y-3)=0
(2y-3) ( 5y+2)=0
y= 3/2, -2/5
Hence the relation cannot be determined

By: Amit Kumar

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