Quadratic Equations

Quantitative Aptitude (SBI-CL)

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I. 6x^2 + 77x + 121 = 0

II. y^2 + 9y − 22 = 0

No relation

y ≥ x

y > x

x > y

Explanation:

I.6x^2 + 77x + 121 = 0
6x ^2 + 66x + 11x + 121 = 0
6x(x + 11) + 11(x + 11) = 0
(6x + 11)(x + 11) = 0
x = − 11/ 6 , −11
II. Y^ 2 + 9y − 22 = 0
y^ 2 + 11y − 2y − 22 = 0
y(y + 11) − 2(y + 11)
(y − 2)(y + 11) = 0
y = 2, −11
No relation

By: Amit Kumar

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