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Standard VIII
Mathematics
Question
If
A
=
4
x
2
+
y
2
−
6
x
y
;
B
=
3
y
2
+
12
x
2
+
8
x
y
;
C
=
6
x
2
+
8
y
2
+
6
x
y
Find the (i)
A
+
B
+
C
(ii)
(
A
−
B
)
−
C
Open in App
Solution
Verified by Toppr
(i)
22
x
2
+
12
y
2
+
8
x
y
(ii)
−
14
x
2
−
10
y
2
−
20
x
y
or
−
(
14
x
2
+
10
y
2
+
20
x
y
)
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3
Similar Questions
Q1
If
A
=
4
x
2
+
y
2
−
6
x
y
;
B
=
3
y
2
+
12
x
2
+
8
x
y
;
C
=
6
x
2
+
8
y
2
+
6
x
y
Find the (i)
A
+
B
+
C
(ii)
(
A
−
B
)
−
C
View Solution
Q2
If
A
=
4
x
2
+
y
2
−
6
x
y
,
B
=
3
y
2
+
12
x
2
+
8
x
y
and
C
=
6
x
2
+
y
2
+
6
x
y
, find
A
+
B
+
C
.
View Solution
Q3
If A =
4
x
2
+
y
2
−
12
x
y
+
9
x
,
B =
3
y
2
+
9
x
2
+
6
x
y
−
7
x
,
C =
6
x
2
+
6
y
2
+
9
x
y
Find 2A-3B+4C.
View Solution
Q4
If A = 7x
2
+ 5xy − 9y
2
, B = −4x
2
+ xy + 5y
2
and C = 4y
2
− 3x
2
− 6xy then show that A + B + C = 0.
View Solution
Q5
What should be subtracted from
2
x
2
−
4
y
2
+
6
x
y
+
10
to obtain
−
2
x
2
−
3
y
2
+
6
x
y
+
10
?
View Solution