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Byju's Answer
Standard IX
Mathematics
Long Division Method to Divide Two Polynomials
What must be ...
Question
What must be subtracted from
4
x
4
−
2
x
3
−
6
x
2
+
x
−
5
so that result is exactly divisible by
2
x
2
+
x
−
1
?
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Solution
We divide
4
x
4
−
2
x
3
−
6
x
2
+
x
−
5
by
2
x
2
+
x
−
1
as shown in the below image:
From the division, we observe that the quotient is
2
x
2
−
2
x
−
1
and the remainder is
−
6
.
Hence,
−
6
should be subtracted from
4
x
4
−
2
x
3
−
6
x
2
+
x
−
5
so that result is exactly divisible by
2
x
2
+
x
−
1
.
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Similar questions
Q.
What must be subtracted from (x
4
+ 2x
3
– 2x
2
+ 4x + 6) so that the result is exactly divisible by (x
2
+ 2x – 3)?