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Question

If (5x2+14x+2)2(4x25x+7)2 is divided by (x2+x+1), then quotient 'q' and remainder 'r' respectively are _____.

A
(x2+19x5),0
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B
9(x2+19x5),0
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C
(x2+19x5),1
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D
9(x2+19x5),1
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Solution

The correct option is B 9(x2+19x5),0
We have, (5x2+14x+2)2(4x25x+7)
=(x2+19x5)(9x2+9x+9) ....Since (a2b2=(a+b)(ab))
=9(x2+19x5)(x2+x+1)
Therefore, q=9(x2+19x5) and r=0

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