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Question

If the quotient obtained on dividing (8x42x2+6x7) by (2x+1) is (4x3+px2qx+3) then find p,q and also the remainder.

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Solution

The division of (8x42x2+6x7) and (2x+1) is shown above:

Therefore, from the division, we get that the quotient is (12(8x34x2+6)) that is (4x32x2+3) and the remainder is 10.

But it is also given that the quotient is (4x3+px2qx+3), thus on comparing the coefficients of both the quotients (4x32x2+3) and (4x3+px2qx+3), we get

p=2 and
q=0

Hence, p=2, q=0 and the remainder is 10.

635037_562493_ans_099db0d7d77c4f4288b5ca04c1f0b124.png

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