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If g(x) = 3x + x^(1/2), what is the value of g(d^2 +6d+9)?

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Intern
Joined: 08 Feb 2011
Posts: 1
If g(x) = 3x + x^(1/2), what is the value of g(d^2 +6d+9)?  [#permalink]

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09 Feb 2011, 00:02
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If $$g(x) = 3x + \sqrt{x}$$, what is the value of $$g(d^2 +6d+9)$$?
Director
Status: -=Given to Fly=-
Joined: 04 Jan 2011
Posts: 799
Location: India
Concentration: Leadership, Strategy
Schools: Haas '18, Kelley '18
GMAT 1: 650 Q44 V37
GMAT 2: 710 Q48 V40
GMAT 3: 750 Q51 V40
GPA: 3.5
WE: Education (Education)
Re: If g(x) = 3x + x^(1/2), what is the value of g(d^2 +6d+9)?  [#permalink]

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09 Feb 2011, 02:31
d^2 + 6d + 9 = (d+3)^2

g((d+3)^2) = 3(d+3)^2 + Y(d+3)^2

So... what's the question?

:D
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If g(x) = 3x + x^(1/2), what is the value of g(d^2 +6d+9)?  [#permalink]

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12 Jul 2017, 07:42
nelvin898 wrote:
If $$g(x) = 3x + \sqrt{x}$$, what is the value of $$g(d^2 +6d+9)$$?

$$g(x) = 3x + \sqrt{x}$$

$$g(d^2 +6d+9) = g(d + 3)^2$$

Lets denote $$(d + 3)^2 = y$$

$$g(y) = 3y + \sqrt{y}$$

$$g(y) = 3(d + 3)^2 + \sqrt{(d+3)^2}$$

Hi nelvin898, Could you please provide with further information on the question, what is the question asking for , what are the answer choices and what is the OA.

Thank you.
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Joined: 11 Feb 2017
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Re: If g(x) = 3x + x^(1/2), what is the value of g(d^2 +6d+9)?  [#permalink]

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12 Jul 2017, 08:38
nelvin898 wrote:
If $$g(x) = 3x + \sqrt{x}$$, what is the value of $$g(d^2 +6d+9)$$?

d= -3 or d = -10 / 3

let me know which is right
Re: If g(x) = 3x + x^(1/2), what is the value of g(d^2 +6d+9)?   [#permalink] 12 Jul 2017, 08:38
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If g(x) = 3x + x^(1/2), what is the value of g(d^2 +6d+9)?

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