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If x is an integer, then which of the following is the product of the  [#permalink]

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Difficulty:   15% (low)

Question Stats: 78% (01:40) correct 22% (02:04) wrong based on 111 sessions

### HideShow timer Statistics If x is an integer, then which of the following is the product of the next two integers greater than 2(x + 1)?

(A) $$4x^2 + 14x + 12$$

(B) $$4x^2 + 12$$

(C) $$x^2 + 14x + 12$$

(D) $$x^2 + x + 12$$

(E) $$4x^2 + 14x$$

Source: Nova GMAT
Difficulty Level: 550

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Originally posted by Bunuel on 13 Jun 2017, 10:48.
Last edited by SajjadAhmad on 03 Jul 2019, 05:55, edited 1 time in total.
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Re: If x is an integer, then which of the following is the product of the  [#permalink]

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The integer can be written as 2(x+1) = 2x + 2.

The two consecutive integers which are greater that this integer are 2x + 3 and 2x + 4.

The product of these two integers is $$(2x + 3)(2x + 4)$$ or $$4x^2 + 14x + 12$$(Option A)
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Re: If x is an integer, then which of the following is the product of the  [#permalink]

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Bunuel wrote:
If x is an integer, then which of the following is the product of the next two integers greater than 2(x + 1)?

(A) $$4x^2 + 14x + 12$$

(B) $$4x^2 + 12$$

(C) $$x^2 + 14x + 12$$

(D) $$x^2 + x + 12$$

(E) $$4x^2 + 14x$$

2(x + 1) = 2x + 2
So, the NEXT two integers are 2x + 2 + 1 and 2x + 2 + 2
In other words, the NEXT two integers are 2x + 3 and 2x + 4

So, the required product is (2x + 3)(2x + 4)
Apply the FOIL method to get: (2x + 3)(2x + 4) = 4x² + 8x + 6x + 12 = 4x² + 14x + 12

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Re: If x is an integer, then which of the following is the product of the  [#permalink]

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Assume, x=1, then 2(1+1) = 4.
Next two numbers are 5 and 6 and their product is 30.
Answer choice A) 4.1^2+ 14.1+12=30. No need to check the rest, as this option gives the product 30
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Re: If x is an integer, then which of the following is the product of the  [#permalink]

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