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Byju's Answer
Standard IX
Mathematics
Addition of Polynomials
2 x4-13 x2 y2...
Question
2x
4
-
13x
2
y
2
+ 15y
4
Open in App
Solution
We
have
2
x
4
-
13
x
2
y
2
+
15
y
4
.
Let
x
2
=
a
and
y
2
=
b
i
.
e
.
,
x
4
=
a
2
,
y
4
=
b
2
and
x
2
y
2
=
a
b
∴
2
x
4
-
13
x
2
y
2
+
15
y
4
=
2
a
2
-
13
a
b
+
15
b
2
=
2
a
2
-
10
a
b
-
3
a
b
+
15
b
2
=
2
a
a
-
5
b
-
3
b
a
-
5
b
=
a
-
5
b
2
a
-
3
b
Resubstituting
the
values
of
a
and
b
,
we
get
:
2
x
4
-
13
x
2
y
2
+
15
y
4
=
x
2
-
5
y
2
2
x
2
-
3
y
2
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Q.
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