Quadratic Equations

Quantitative Aptitude (SBI-PO)

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I. 35x²+51x+18=0

II. 9y² =1

x > y

x ≥ y

x < y

x = y or Cannot be determined.

Explanation:

35x²+51x+18=0
35x² + 30x+ 21x+18=0
5x(7x +6) + 3(7x +6)=0
(7x+6) ( 5x+3)=0
x= -6/7 , -3/5
9y² =1
9y²-1=0
(3y-1) ( 3y+1)=0
y= 1/3,- 1/3
Hence y>x

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