Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

If -5 is a root of the quadratic equation 2x2+ px –15 = 0 and the quadratic equation p(x2+ x)k = 0 has equal roots, find the value of k.
Asked by bishnoi.harsh.07 | 15 Feb, 2019, 05:34: PM
answered-by-expert Expert Answer
f(x)=2x2+ px –15 = 0
f(-5)=2(-5)2+ p(-5) –15 = 0
p=35/5=7
 
p(x2+ x)k = 0
(pk)x2+ (pk)x=0
has equal roots
b2-4ac=0
p2k2=0
k=0
Answered by Arun | 17 Feb, 2019, 01:13: PM
CBSE 10 - Maths
Asked by noorykhatoon97 | 05 Jun, 2024, 08:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
m
question image
Asked by rgrohith11 | 04 Jun, 2024, 12:22: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by dagardisha39 | 28 Apr, 2024, 12:58: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by rrajansinghakb199 | 08 Apr, 2024, 05:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by goyelgurav | 18 Dec, 2023, 11:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by Kunalbaniya384 | 25 Nov, 2023, 08:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by mehraharshit.dk000 | 05 Oct, 2023, 08:05: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by atharvsharma971 | 06 Jun, 2022, 10:30: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by zk4656260 | 31 May, 2022, 05:32: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by ankur.spsharma | 02 May, 2022, 11:54: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×