SELECT * FROM question_mgmt as q WHERE id=9511 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=9 AND subId=6 AND chapterId=269 and ex_no='4' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 10th mathematics Polynomials if the polynomial x4 nbsp ndash 6x3 nbsp 16x2

Question:

If the polynomial x– 6x+ 16x– 25x + 10 is divided by another polynomial x– 2x + k, the remainder comes out to be x + a, find k and a.

Answer:

Given,

Divisor = x2 – 2x + k

Dividend = x4 – 6x3 + 16x2 – 25x + 10

Remainder = x + a

As we know that,

Dividend = divisor quotient + remainder

x4 – 6x3 + 16x2 – 25x + 10 = x2 – 2x + k quotient + (x + a)

x4 – 6x3 + 16x2 – 25x + 10 –  (x + a)  = x2 – 2x + k quotient

x4 – 6x3 + 16x2 – 26x + 10 – a  = quotient

               x2 – 2x + k

If the polynomial x4 – 6x3 + 16x2 – 26x + 10 –  a is divided by x2 – 2x + k remainder comes out to be zero.

Therefore, By equating the remainder with zero, we have

(-10 + 2k) = 0 => 2k = 10  => k = 5

Or, 10 – a – 8k + k2 = 0

Putting the value of k, we get

10 – a – 8(5) + (5)2 = 0

10 – a – 40 + 25 = 0

- a – 5 = 0 => a = -5

Hence, k = 5 and a = -5


SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='9' AND subId='6' AND ex_no!=0 AND status=1 and id!=9511 ORDER BY views desc, last_viewed_on desc limit 0,10
SELECT ex_no,question,question_no,id,chapter FROM question_mgmt as q WHERE courseId='9' AND subId='6' AND ex_no!=0 AND status=1 and id!=9511 ORDER BY last_viewed_on desc limit 0,10
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