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Byju's Answer
Standard IX
Mathematics
Synthetic Division of Polynomials
Divide the po...
Question
Divide the polynomial
p
(
x
)
by the polynomial
g
(
x
)
and find the quotient and remainder.
p
(
x
)
=
x
4
−
5
x
+
6
,
g
(
x
)
=
2
−
x
2
.
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Solution
Step 1: Divide the highest degree term of the dividend by the highest degree term of the divisor.
x
4
is the highest term in dividend and
−
x
2
is the highest term in divisor and we will divide
x
4
by
−
x
2
, we get the first term of the quotient as
−
x
2
Step 2: Multiply the quotient with the divisor..
The product is
x
4
−
2
x
2
Step 3: Subtract the product of the divisor and the quotient from the dividend.
we get
2
x
2
−
5
x
+
6
after subtraction
Repeat the steps till the remainder is zero or deg r(x) < deg g(x).
So, the quotient is
−
x
2
−
2
And the remainder is
−
5
x
+
10
.
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Similar questions
Q.
On dividing
3
x
3
+
4
x
2
+
5
x
−
1
3
by a polynomial 𝒈(𝒙), the quotient and remainder were
3
x
+
1
0
and
1
6
x
−
4
3
respectively. Find the polynomial 𝒈(𝒙).
Q.
When
x
4
+
x
3
−
2
x
2
+
x
+
2
is divided by 𝒈(𝒙), the quotient is 𝒙−𝟏 and the remainder is 𝟑. Find 𝒈(𝒙).
Q.
What’s the value of the polynomial
p
(
x
)
=
x
2
–
2
x
at
x
=
2
.
Q.
Find all the zeroes of the polynomial
p
(
x
)
=
x
4
+
x
3
−
3
4
x
2
−
4
x
+
1
2
0
if two of its zeroes are
2
and
−
2
.
Q.
If the zeroes of the polynomial
x
2
+
p
x
+
q
are double in value to the zeroes of
2
x
2
−
5
x
–
3
, find the value of 𝒑 and 𝒒.
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