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# If [[x]] = x^2 + 2x + 4, what is the value of [[3]]?

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Re: If [[x]] = x^2 + 2x + 4, what is the value of [[3]]? [#permalink]
Bunuel wrote:
If [[x]] = x^2 + 2x + 4, what is the value of [[3]]?

A. 3
B. 9
C. 15
D. 19
E. 25

x^2 + 2x + 4

Or, 3^2 + 2*3 + 4

= 9 + 6 + 4

= 19

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Re: If [[x]] = x^2 + 2x + 4, what is the value of [[3]]? [#permalink]
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Bunuel wrote:
If [[x]] = x^2 + 2x + 4, what is the value of [[3]]?

A. 3
B. 9
C. 15
D. 19
E. 25

Since [[x]] = x^2 + 2x + 4, [[3]] = 3^2 + 6 + 4 = 9 + 10 = 19.

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Re: If [[x]] = x^2 + 2x + 4, what is the value of [[3]]? [#permalink]
Bunuel wrote:
If [[x]] = x^2 + 2x + 4, what is the value of [[3]]?

A. 3
B. 9
C. 15
D. 19
E. 25

$$3^2+2(3)+4=19$$
Re: If [[x]] = x^2 + 2x + 4, what is the value of [[3]]? [#permalink]
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