Ask a Doubt
Request a call back

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

CBSE Class 10 Answered

<div>The zeroes of the polynomial k1 x^2 + k2 x - 15 are -5 and 3. Find the values of k1 and k2.</div>
Asked by Jerlin George | 04 Apr, 2015, 06:13: PM
Expert Answer
C o n s i d e r space t h e space g i v e n space p o l y n o m i a l. k subscript 1 x squared plus k subscript 2 x minus 15 equals 0 A l s o space g i v e n space t h a t space minus 5 space a n d space 3 space a r e space t h e space z e r o e s space o f space t h e space a b o v e space p o l y n o m i a l. C o n s i d e r space t h e space g e n e r a l space q u a d r a t i c space p o l y n o m i a l a x squared plus b x plus c equals 0 S u m space o f space t h e space r o o t s equals fraction numerator negative b over denominator a end fraction P r o d u c t space o f space t h e space r o o t s equals c over a C o m p a r i n g space t h e space c o e f f i c i e n t s space w i t h space t h e space g i v e n space e q u a t i o n comma s u m space o f space t h e space r o o t s equals negative 5 plus 3 minus 5 plus 3 equals fraction numerator negative k subscript 2 over denominator k subscript 1 end fraction rightwards double arrow negative 2 equals fraction numerator negative k subscript 2 over denominator k subscript 1 end fraction rightwards double arrow 2 k subscript 1 equals k subscript 2 P r o d u c t space o f space t h e space r o o t s equals open parentheses negative 5 close parentheses cross times 3 open parentheses negative 5 close parentheses cross times 3 equals fraction numerator negative 15 over denominator k subscript 1 end fraction rightwards double arrow k subscript 1 equals 1 space a n d space h e n c e space k subscript 2 equals 2
Answered by Vimala Ramamurthy | 04 Apr, 2015, 07:55: PM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 10 - Maths
what is degree of polynomial
Asked by Vandanagarg145 | 04 Jan, 2023, 12:11: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
If the zeroes of the polynomial x3 – 3x2 + x + 1 are a – b, a, a + b, find a and b
Asked by pramodmahto80 | 15 Dec, 2022, 04:30: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
Solve it
Asked by navneetpra499 | 19 Jul, 2022, 05:06: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
verify that 1,-1and 3 are the zeroes of the cubic polynomials x^3-3x^2+3 and check the relationship between zeroes and the coefficients
Asked by vangasathwikreddy3 | 13 Jul, 2022, 10:50: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
what is polynomials
Asked by ravindar.sanka123 | 07 Jul, 2022, 01:30: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
Polynomial
Asked by babadubey9771 | 03 Jul, 2022, 10:53: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
if p(x) =x² +5x+2, then find the value of p (3)+p(2)+p(0)
Asked by hr31448 | 01 Jun, 2022, 07:33: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
Write the number of consecutive zeros in the prime factorization of a natural number N given by 2⁴×3⁴×5³×11.
Asked by priyankakiran2017 | 18 May, 2022, 04:06: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
answer this question
Asked by anuragtikekar2006 | 07 May, 2022, 06:33: PM
ANSWERED BY EXPERT
CBSE 10 - Maths
What should be added to the polynomial x^3 - 2x^2 -3x -4 so, that it is completely divisible by x^2 - x
Asked by mv716304 | 01 Apr, 2022, 05:16: PM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get FREE Sample Mock Papers for Final Exams
Download Now
×