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Quantitative Aptitude

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Quadratic Equations

Question
1 out of 10
 

In each of these questions, two equations are given. You have to solve these equations and find out the values of x and y and :


I. 8x2 + 6x = 5 II. 12y2 −22y + 8 = 0



A if x <y

B if x >y

C if x ≤ y

D if x ≥ y

E if x = y

Ans. C 8x2 + 6x – 5 = 0, 8x2 + 10x – 4x – 5 = 0,

2x (4x + 5) – 1 (4x + 5) =0, (2x-1)(4x+5) =0

2x = 1, x =

12y2 – 22y + 8 = 0

12y2 – 16y – 6y + 8 = 0

2y(6y-8) – 1(6y-8) = 0

(2y-1) (6y-8)=0, y =

x y

Quadratic Equations Flashcard List

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