Quadratic Equations

Quantitative Aptitude (SBI-PO)

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I. 35x²-4x-15=0

II. 10y²+129y-13=0

x > y

x ≥ y

x < y

x ≤ y

Explanation:

35x²-4x-15=0
35x² – 25x+ 21x-15=0
5x(7x -5) + 3(7x -5)=0
(7x-5) ( 5x+3)=0
x= 5/7 , -3/5
10y²+129y-13=0
10y² -y+ 130y -13=0
y( 10y-1) + 13(10y-1)=0
(10y-1) ( y+13)=0
y= 1/10,- 13
Hence x>y

By: Amit Kumar

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