BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course
Redeem
Featured Course
Target Test Prep GMAT OnDemand
Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.
- 715+ score guarantee — highest in the industry (99th percentile)
- 52 chapters · 1,500+ lessons · 4,000+ practice questions
- 400 hours of video · 1,500+ instructor-led HD smartboard lessons
- 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
- 24/7 live support + weekly Zoom office hours with GMAT instructors
- TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
- 1,200+ flashcards + AI-powered study assistant & daily calendar
- OnDemand, LiveTeach & GMAT Bootcamp formats available
- Also: GRE, SAT Math & Executive Assessment courses
- MBA Admissions Consulting now available
- 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
- 200,000+ students served
- 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★
5.0
(559 reviews)
130-pt guarantee
$0 to start
then $127/mo
practice question 55
Source: Beat The GMAT — Problem Solving |
(t^2)- kt-48 = (t+6)(t-8 )
because we know that (t-8 ) is a factor of (t^2)- kt-48
solving (t+6)(t-8 ) = (t^2)-8t+6t-48 = t^2-2t-48
k=2
because we know that (t-8 ) is a factor of (t^2)- kt-48
solving (t+6)(t-8 ) = (t^2)-8t+6t-48 = t^2-2t-48
k=2
niraj_a wrote:try substituting 8 for t in the given equation, and then solve for k.
Yes, if 8 is a root.
Then t-8 = 0.
t = 8
