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Standard VII
Mathematics
Finding the Value of an Expression
Question
If
x
=
6
and
y
=
2
, what is the value of
3
x
y
+
2
x
2
y
3
?
612
418
510
516
520
A
418
B
510
C
612
D
520
E
516
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Solution
Verified by Toppr
Given,
x
=
6
,
y
=
2
To solve for
3
x
y
+
2
x
2
y
3
3
x
y
+
2
x
2
y
3
⇒
x
y
(
3
+
2
x
y
2
)
⇒
6
×
2
(
3
+
2
×
6
(
2
)
2
)
⇒
12
(
3
+
48
)
⇒
12
×
51
⇒
612
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Similar Questions
Q1
If
x
=
6
and
y
=
2
, what is the value of
3
x
y
+
2
x
2
y
3
?
View Solution
Q2
Find the value of
(
6
x
6
)
×
(
−
2
x
2
y
3
)
×
(
−
24
x
y
2
)
, when x = 1 and y = 2.
View Solution
Q3
If
x
=
−
2
and
x
2
+
y
2
+
3
x
y
=
−
5
View Solution
Q4
If
x
3
+
y
3
+
1
=
3
x
y
,
where
x
≠
y
determine the value of
x
+
y
+
1.
View Solution
Q5
Find the LCM of
6
(
x
2
+
2
x
y
−
3
y
2
)
,
4
(
x
2
−
3
x
y
+
2
y
2
)
,
8
(
x
2
+
x
y
−
6
y
2
)
View Solution