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Which of the following equations has 7 and 2 as roots? x2 – 9x + 14 =

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Which of the following equations has 7 and 2 as roots? x2 – 9x + 14 =  [#permalink]

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New post 28 Apr 2019, 17:54
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Which of the following equations has 7 and 2 as roots?

A. \(x^2 – 9x + 14 = 0\)

B. \(x^2 + 14 = 0\)

C. \(x^2 + 9x + 14 = 0\)

D. \(x^2 – 7 = 0\)

E. \(x^2 + 5x – 14 = 0\)

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Re: Which of the following equations has 7 and 2 as roots? x2 – 9x + 14 =  [#permalink]

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New post 29 Apr 2019, 08:28
SajjadAhmad wrote:
Which of the following equations has 7 and 2 as roots?

A. \(x^2 – 9x + 14 = 0\)

B. \(x^2 + 14 = 0\)

C. \(x^2 + 9x + 14 = 0\)

D. \(x^2 – 7 = 0\)

E. \(x^2 + 5x – 14 = 0\)


SajjadAhmad
by having roots as 7 &2 does it mean + or -ve roots?
IMO A ; has both roots +ve
C has both -ve roots?
which is correct root value here +ve or -ve?
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Re: Which of the following equations has 7 and 2 as roots? x2 – 9x + 14 =  [#permalink]

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New post 23 May 2019, 18:08
SajjadAhmad wrote:
Which of the following equations has 7 and 2 as roots?

A. \(x^2 – 9x + 14 = 0\)

B. \(x^2 + 14 = 0\)

C. \(x^2 + 9x + 14 = 0\)

D. \(x^2 – 7 = 0\)

E. \(x^2 + 5x – 14 = 0\)


(x-7)*(x-2) = 0

x^2-2x-7x+14 = 0

Answer A
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Re: Which of the following equations has 7 and 2 as roots? x2 – 9x + 14 =  [#permalink]

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New post 23 May 2019, 18:23
Archit3110 wrote:
SajjadAhmad wrote:
Which of the following equations has 7 and 2 as roots?

A. \(x^2 – 9x + 14 = 0\)

B. \(x^2 + 14 = 0\)

C. \(x^2 + 9x + 14 = 0\)

D. \(x^2 – 7 = 0\)

E. \(x^2 + 5x – 14 = 0\)


SajjadAhmad
by having roots as 7 &2 does it mean + or -ve roots?
IMO A ; has both roots +ve
C has both -ve roots?
which is correct root value here +ve or -ve?


Option A. I think he meant +7 and +2.
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Re: Which of the following equations has 7 and 2 as roots? x2 – 9x + 14 =   [#permalink] 23 May 2019, 18:23
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Which of the following equations has 7 and 2 as roots? x2 – 9x + 14 =

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