Which of the following equation has roots common with x2-6x+5=0? a. x2+1 = 0 b. x2-x-2=0 c. x2-10x-5=0 d. 2x2-2=0 e. x2-2x-3=0 Answer is D. (sorry dont know how to hide the answer!) This is simple problem, but i not able to understand the official answer. (x-5) (x-1) = 0, so factors are 5 and 1. The official answers picked D has substituting 1 in the equation results in 0. Why did we not substitute 5? If we do so then D doesn't make sense. This problem is from Veritas prep material Thanks everyone!

Hi Probably the reason for choosing D was because it has at least 1 matching root. In the remaining options, there are no matches at all.

sweet83 wrote:Which of the following equation has roots common with x2-6x+5=0? a. x2+1 = 0 b. x2-x-2=0 c. x2-10x-5=0 d. 2x2-2=0 e. x2-2x-3=0 Answer is D. (sorry dont know how to hide the answer!) This is simple problem, but i not able to understand the official answer. (x-5) (x-1) = 0, so factors are 5 and 1. The official answers picked D has substituting 1 in the equation results in 0. Why did we not substitute 5? If we do so then D doesn't make sense. This problem is from Veritas prep material Thanks everyone! I think instead of asking "common roots" it should be "common root"

The Answer is D because only D has root in common with the given equation. 2(x^2 - 1) gives x = 1.. where initial equation has 5 and 1. Note: The question did not ask for all the common roots, but only one common root.

sweet83 wrote:Which of the following equation has roots common with x2-6x+5=0? a. x2+1 = 0 b. x2-x-2=0 c. x2-10x-5=0 d. 2x2-2=0 e. x2-2x-3=0 Simplifying the given equation, we have: x^2 - 6x + 5 = 0 (x - 5)(x - 1) = 0 x = 5 or x = 1 By scanning through the answer choices, we see x = 1 is a solution to 2x^2 - 2 = 0. Thus, choice D is the answer. Answer: D.

Roots in common with x2-6x+5=0 - The Beat The GMAT Forum - Expert GMAT Help & MBA Admissions Advice

GMATLiveTeachStarts Nov 22

LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow: Sun · 9:30 AM to 12:30 PM ET
Included: 40 hours of live online classes + 6 months of TTP OnDemand

Attend the first class for free
Every class is recorded, so you never fall behind

View classes & enroll

Limited seats available

EALiveTeachOnDemandStart anytime

EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee

$05-day trial no automatic billing

Schedule
Included: 40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.

165+ EA Score Guarantee
4,100+ Quant, Verbal, and Integrated Reasoning practice questions
400+ hours of in-depth video lessons
3,000+ step-by-step video solutions

View EA class & enroll Start free 5-day trial

Limited cohort · enrollment openTrial includes full course access

GMATOnDemandStart anytime

SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee

$0to start then $127/mo

Personalized study plan and analytics
Thousands of lessons and practice questions

Start free 5-day trial

Read 563 reviews

Choose how you want to prepare

Get Ready for GMAT Test Day Faster with Live Online Classes

Target Test Prep EA OnDemand

Target Test Prep GMAT OnDemand

Roots in common with x2-6x+5=0

Re: Roots in common with x2-6x+5=0

Chicago Booth

GMAT Course Reviews

Admissions Consulting Reviews

FREE GMAT PREP RESOURCES

GMAT PREP DEAL TRACKER