GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
If x² - 9 = 0, x² + xy - 18 = 0 nd x nd y r bth psitiv intgrs
[#permalink]
Updated on: 12 May 2024, 09:56
Updated on: 12 May 2024, 09:56
Expert Reply
00:00
Question Stats:
100% (01:07) correct
0% (00:00) wrong based on 18 sessions
Hide Show timer Statistics
If x² - 9 = 0, x² + xy - 18 = 0 аnd x аnd y аrе bоth pоsitivе intеgеrs, whаt аrе thе vаluеs оf x аnd y?
A, x = 2, y = 1
B. x = 3, y = 1
C. x = 1, y = 3
D. x = 1, y = 2
E. x = 3, y = 3
A, x = 2, y = 1
B. x = 3, y = 1
C. x = 1, y = 3
D. x = 1, y = 2
E. x = 3, y = 3
Part of the project: The Butler-GRE Daily New Quant and Verbal Questions to Practice (2023) - Gain 20 Kudos & Get FREE Access to GRE Prep Club TESTS
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Free Materials for the GRE General Exam - Where to get it!!
GRE Geometry Formulas
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Free Materials for the GRE General Exam - Where to get it!!
GRE Geometry Formulas
GRE - Math Book
Re: If x² - 9 = 0, x² + xy - 18 = 0 nd x nd y r bth psitiv intgrs
[#permalink]
31 Mar 2024, 22:18
31 Mar 2024, 22:18
from the 1st equation, x^2 is 9, meaning x is either 3 or -3, from the 2nd equation since x^2 is 9, xy would be 9, y should be 3 or a -3 (x is either 3 or -3) . Option "E" only satisfies this, is this the correct way to approach this??
Manager
Joined: 11 Nov 2023
Posts: 228
Given Kudos: 78
WE:Business Development (Advertising and PR)
Re: If x² - 9 = 0, x² + xy - 18 = 0 nd x nd y r bth psitiv intgrs
[#permalink]
12 May 2024, 08:18
12 May 2024, 08:18
1
steveharvi wrote:
from the 1st equation, x^2 is 9, meaning x is either 3 or -3, from the 2nd equation since x^2 is 9, xy would be 9, y should be 3 or a -3 (x is either 3 or -3) . Option "E" only satisfies this, is this the correct way to approach this??
Carcass I agree, the correct answer is actually E, not B.
