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Let the values of x that satisfy the quadratic equation x2 + 7x + 12 =

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Senior Manager
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Let the values of x that satisfy the quadratic equation x2 + 7x + 12 =  [#permalink]

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New post 05 Mar 2019, 23:14
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A
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C
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E

Difficulty:

  55% (hard)

Question Stats:

40% (01:41) correct 60% (02:33) wrong based on 20 sessions

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Let the values of x that satisfy the quadratic equation x^2 + 7x + 12 = 0 form an ordered pair (x,y) such that x > y. Which of the following relations does the point (x,y) satisfy?

A) x – 3y = -6
B) 2x – 3y = 10
C) 2x – 5y =14
D) x – y = 8
E) None of these.
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Re: Let the values of x that satisfy the quadratic equation x2 + 7x + 12 =  [#permalink]

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New post 05 Mar 2019, 23:56
mangamma wrote:
Let the values of x that satisfy the quadratic equation x^2 + 7x + 12 = 0 form an ordered pair (x,y) such that x > y. Which of the following relations does the point (x,y) satisfy?

A) x – 3y = -6
B) 2x – 3y = 10
C) 2x – 5y =14
D) x – y = 8
E) None of these.


Roots of the equation x^2 + 7x + 12 = 0 are -3 and -4.

Since x>y in the ordered pair (x,y), hence x=-3 and y=-4

from the options 2x-5y=14 at (-3,-4).

Ans. (C)
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Re: Let the values of x that satisfy the quadratic equation x2 + 7x + 12 =   [#permalink] 05 Mar 2019, 23:56
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Let the values of x that satisfy the quadratic equation x2 + 7x + 12 =

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