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# Find the value of the expression x^3y – x^3/y

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Math Expert
Joined: 02 Sep 2009
Posts: 46991
Find the value of the expression x^3y – x^3/y [#permalink]

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22 Oct 2017, 06:35
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Difficulty:

45% (medium)

Question Stats:

57% (00:50) correct 43% (00:24) wrong based on 35 sessions

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Find the value of the expression $$x^3y – \frac{x^3}{y}$$.

(1) x = 2
(2) y = 1

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Status: Preparing for GMAT
Joined: 25 Nov 2015
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Re: Find the value of the expression x^3y – x^3/y [#permalink]

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22 Oct 2017, 07:06
$$x^3$$y-$$x^3$$/y =$$x^3$$(y-$$\frac{1}{y}$$)
S1 - x=2
Insufficient as we need value of y.

S2 - y=1
If y=1, we see that the expression becomes 0.
Sufficient

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Re: Find the value of the expression x^3y – x^3/y   [#permalink] 22 Oct 2017, 07:06
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