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Byju's Answer
Standard VIII
Mathematics
Division of a Polynomial by a Polynomial
if x y + y ...
Question
if
x
y
+
y
x
=
−
1
(
x
,
y
≠
0
)
then
x
3
−
y
3
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Solution
Given
x
y
+
y
x
=
−
1
x
2
+
y
2
=
−
x
y
x
2
+
y
2
+
x
y
=
O
Now
x
3
−
y
3
=
(
x
−
y
)
(
x
2
+
x
y
+
x
2
)
=
(
x
−
y
)
O
=
0
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1
Similar questions
Q.
If
x
y
+
y
x
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−
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(
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,
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≠
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Q.
If
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y
+
y
x
=
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