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Byju's Answer
Standard XII
Mathematics
Properties of Inverse Function
Find the valu...
Question
Find the values of
x
and
y
10
x
+
y
+
2
x
−
y
=
4
,
x
+
y
≠
0
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Solution
Take
A
=
x
+
y
,
B
=
x
−
y
10
A
+
2
B
=
4
,
15
A
−
5
B
=
−
2
⇒
(
5
A
)
+
(
1
B
)
=
2
&
(
3
A
)
+
(
−
1
B
)
=
−
2
5
⇒
8
A
=
8
5
⇒
A
=
5
,
B
=
1
S
o
,
x
+
y
=
5
,
x
−
y
=
1
⇒
x
=
3
,
y
=
2
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0
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