Request a call back

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

CBSE Class 10 Answered

Q if a and b are zeros of 2x^2-5x+7 find a polynomial whose zeros are 2a+3b and 3a+2b
Asked by Kumarashish6345 | 21 Dec, 2018, 06:29: PM
answered-by-expert Expert Answer
This question is solved if given polynomial is 2x²-5x-7, other wise we are not getting real roots.
 
to get zeros of polynomial, we solve the given quadratic equation by factorisation
 
2x²-5x-7 = 0
2x²-7x+2x-7 = 0
x(2x-7)+(2x-7) = (2x-7)(x+1) = 0 ;  hence zeros are -1 and 7/2
 
let a = -1 and b = 7/2 ;  hence 2a+3b = 17/2  and 3a+2b = 4
 
hence required polynomial :-  (x-4)(x-17/2)   or (x-4)(2x-17) = 2x²-25x+68
Answered by Thiyagarajan K | 27 Dec, 2018, 10:42: AM
CBSE 10 - Biology
Asked by chaudharykavya508 | 17 May, 2024, 05:20: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
.
question image
Asked by xtream1sharuq2 | 24 Apr, 2024, 12:02: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by kunchalasrinivasaraosrinivasar | 23 Apr, 2024, 07:40: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by bgmigaurav7318 | 08 Apr, 2024, 01:46: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by ar3886267 | 01 Mar, 2024, 05:57: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by janu69659 | 28 Feb, 2024, 09:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by nsubhashree54 | 24 Feb, 2024, 11:08: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Biology
Asked by baibhabsenapati | 16 Feb, 2024, 01:29: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×