Quadratic Equations

Quantitative Aptitude(IBPS RRB PO)

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35m²+32m+5=0

9n²– 36n+32=0

m<n

m<=n

m>n

the relation cannot be determined

Explanation:

35m²+32m+5=0
35m² + 25m+ 7m+5=0
5m(7m +5) + 1(7m +5)=0
(7m+5) ( 5m+1)=0
m= -5/7 , -1/5
9n²– 36n+32=0
9n² -12n-24n +32=0
3n( 3n-4) -8(3n-4)=0
(3n-4) ( 3n-8)=0
n= 4/3, 8/3
Hence n>m

By: Amit Kumar

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